42523562064 has 80 divisors (see below), whose sum is σ = 113266036224. Its totient is φ = 13739107200.

The previous prime is 42523561987. The next prime is 42523562071. The reversal of 42523562064 is 46026532524.

It is a super-2 number, since 2×42523562064² (a number of 22 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 15 ways as a sum of consecutive naturals, for example, 191749 + ... + 349019.

Almost surely, 2^42523562064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42523562064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56633018112).

42523562064 is an abundant number, since it is smaller than the sum of its proper divisors (70742474160).

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

42523562064 is a wasteful number, since it uses less digits than its factorization.

42523562064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157456 (or 157450 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 42523562064 in words is "forty-two billion, five hundred twenty-three million, five hundred sixty-two thousand, sixty-four".