42597801664 has 56 divisors (see below), whose sum is σ = 92400120000. Its totient is φ = 19323674880.

The previous prime is 42597801661. The next prime is 42597801679. The reversal of 42597801664 is 46610879524.

42597801664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42597801661) 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, 290667 + ... + 411925.

Almost surely, 2^42597801664 is an apocalyptic number.

42597801664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42597801664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46200060000).

42597801664 is an abundant number, since it is smaller than the sum of its proper divisors (49802318336).

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

42597801664 is a wasteful number, since it uses less digits than its factorization.

42597801664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121781 (or 121771 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 42597801664 in words is "forty-two billion, five hundred ninety-seven million, eight hundred one thousand, six hundred sixty-four".