89572697892 has 36 divisors (see below), whose sum is σ = 226432340316. Its totient is φ = 29855922240.

The previous prime is 89572697891. The next prime is 89572697897. The reversal of 89572697892 is 29879627598.

It can be written as a sum of positive squares in 2 ways, for example, as 22384947456 + 67187750436 = 149616^2 + 259206^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 89572697892.

It is not an unprimeable number, because it can be changed into a prime (89572697891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 718342 + ... + 833762.

It is an arithmetic number, because the mean of its divisors is an integer number (6289787231).

Almost surely, 2^89572697892 is an apocalyptic number.

It is an amenable number.

89572697892 is an abundant number, since it is smaller than the sum of its proper divisors (136859642424).

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

89572697892 is a wasteful number, since it uses less digits than its factorization.

89572697892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136988 (or 136983 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 72.

The spelling of 89572697892 in words is "eighty-nine billion, five hundred seventy-two million, six hundred ninety-seven thousand, eight hundred ninety-two".