20407982534 has 8 divisors (see below), whose sum is σ = 30646644600. Its totient is φ = 10192434336.

The previous prime is 20407982521. The next prime is 20407982549. The reversal of 20407982534 is 43528970402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20407982534² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5776259 + ... + 5779790.

It is an arithmetic number, because the mean of its divisors is an integer number (3830830575).

Almost surely, 2^20407982534 is an apocalyptic number.

20407982534 is a deficient number, since it is larger than the sum of its proper divisors (10238662066).

20407982534 is a wasteful number, since it uses less digits than its factorization.

20407982534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556934.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 20407982534 in words is "twenty billion, four hundred seven million, nine hundred eighty-two thousand, five hundred thirty-four".