65172121160 has 96 divisors (see below), whose sum is σ = 158642064000. Its totient is φ = 24028939008.

The previous prime is 65172121087. The next prime is 65172121177. The reversal of 65172121160 is 6112127156.

65172121160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1009121 + ... + 1071759.

It is an arithmetic number, because the mean of its divisors is an integer number (1652521500).

Almost surely, 2^65172121160 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 65172121160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79321032000).

65172121160 is an abundant number, since it is smaller than the sum of its proper divisors (93469942840).

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

65172121160 is a wasteful number, since it uses less digits than its factorization.

65172121160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62743 (or 62702 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 65172121160 in words is "sixty-five billion, one hundred seventy-two million, one hundred twenty-one thousand, one hundred sixty".