65155715000 has 80 divisors (see below), whose sum is σ = 152787123720. Its totient is φ = 26040560000.

The previous prime is 65155714963. The next prime is 65155715003. The reversal of 65155715000 is 51755156.

It is a super-2 number, since 2×65155715000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65155715003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6860255 + ... + 6869745.

Almost surely, 2^65155715000 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 65155715000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76393561860).

65155715000 is an abundant number, since it is smaller than the sum of its proper divisors (87631408720).

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

65155715000 is a wasteful number, since it uses less digits than its factorization.

65155715000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890 (or 10871 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 35.

The spelling of 65155715000 in words is "sixty-five billion, one hundred fifty-five million, seven hundred fifteen thousand".