240533835381 has 12 divisors (see below), whose sum is σ = 397071728352. Its totient is φ = 137447905896.

The previous prime is 240533835379. The next prime is 240533835391. The reversal of 240533835381 is 183538335042.

240533835381 is a `hidden beast` number, since 2 + 4 + 0 + 5 + 33 + 83 + 538 + 1 = 666.

It is not a de Polignac number, because 240533835381 - 2¹ = 240533835379 is a prime.

It is a super-2 number, since 2×240533835381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240533835361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1908998631 + ... + 1908998756.

It is an arithmetic number, because the mean of its divisors is an integer number (33089310696).

Almost surely, 2^240533835381 is an apocalyptic number.

240533835381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240533835381 is a deficient number, since it is larger than the sum of its proper divisors (156537892971).

240533835381 is a wasteful number, since it uses less digits than its factorization.

240533835381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817997400 (or 3817997397 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 240533835381 in words is "two hundred forty billion, five hundred thirty-three million, eight hundred thirty-five thousand, three hundred eighty-one".