42785661504 has 56 divisors (see below), whose sum is σ = 113221930528. Its totient is φ = 14259594240.

The previous prime is 42785661491. The next prime is 42785661601. The reversal of 42785661504 is 40516658724.

It is a super-2 number, since 2×42785661504² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524204 + ... + 1552020.

It is an arithmetic number, because the mean of its divisors is an integer number (2021820188).

Almost surely, 2^42785661504 is an apocalyptic number.

It is an amenable number.

42785661504 is an abundant number, since it is smaller than the sum of its proper divisors (70436269024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42785661504 is a wasteful number, since it uses less digits than its factorization.

42785661504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35843 (or 35833 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 42785661504 in words is "forty-two billion, seven hundred eighty-five million, six hundred sixty-one thousand, five hundred four".