65687883504 has 80 divisors (see below), whose sum is σ = 176076063744. Its totient is φ = 21079756800.

The previous prime is 65687883479. The next prime is 65687883509. The reversal of 65687883504 is 40538878656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65687883509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172819 + ... + 401549.

Almost surely, 2^65687883504 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 65687883504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88038031872).

65687883504 is an abundant number, since it is smaller than the sum of its proper divisors (110388180240).

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

65687883504 is a wasteful number, since it uses less digits than its factorization.

65687883504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228966 (or 228960 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 65687883504 in words is "sixty-five billion, six hundred eighty-seven million, eight hundred eighty-three thousand, five hundred four".