42776503381 has 8 divisors (see below), whose sum is σ = 43936625240. Its totient is φ = 41616592128.

The previous prime is 42776503369. The next prime is 42776503403. The reversal of 42776503381 is 18330567724.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30832199281 + 11944304100 = 175591^2 + 109290^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42776503381 - 2¹⁵ = 42776470613 is a prime.

It is a super-2 number, since 2×42776503381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42776503321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414505 + ... + 507313.

It is an arithmetic number, because the mean of its divisors is an integer number (5492078155).

Almost surely, 2^42776503381 is an apocalyptic number.

It is an amenable number.

42776503381 is a deficient number, since it is larger than the sum of its proper divisors (1160121859).

42776503381 is a wasteful number, since it uses less digits than its factorization.

42776503381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105303.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 42776503381 in words is "forty-two billion, seven hundred seventy-six million, five hundred three thousand, three hundred eighty-one".