65387278356 has 48 divisors (see below), whose sum is σ = 155106114240. Its totient is φ = 21433662720.

The previous prime is 65387278351. The next prime is 65387278367.

65387278356 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65387278356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65387278351) 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, 4955640 + ... + 4968816.

It is an arithmetic number, because the mean of its divisors is an integer number (3231377380).

Almost surely, 2^65387278356 is an apocalyptic number.

It is an amenable number.

65387278356 is an abundant number, since it is smaller than the sum of its proper divisors (89718835884).

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

65387278356 is a wasteful number, since it uses less digits than its factorization.

65387278356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20024 (or 20022 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 60.

The spelling of 65387278356 in words is "sixty-five billion, three hundred eighty-seven million, two hundred seventy-eight thousand, three hundred fifty-six".