85137901551232 has 128 divisors (see below), whose sum is σ = 174034152115200. Its totient is φ = 41467410063360.

The previous prime is 85137901551221. The next prime is 85137901551299. The reversal of 85137901551232 is 23215510973158.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 85137901551232.

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, 3842125369 + ... + 3842147527.

It is an arithmetic number, because the mean of its divisors is an integer number (1359641813400).

Almost surely, 2^{85137901551232} 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 85137901551232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87017076057600).

85137901551232 is an abundant number, since it is smaller than the sum of its proper divisors (88896250563968).

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

85137901551232 is a wasteful number, since it uses less digits than its factorization.

85137901551232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25194 (or 25182 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 85137901551232 in words is "eighty-five trillion, one hundred thirty-seven billion, nine hundred one million, five hundred fifty-one thousand, two hundred thirty-two".