65387878356 has 24 divisors (see below), whose sum is σ = 153114683904. Its totient is φ = 21718392640.

The previous prime is 65387878333. The next prime is 65387878397.

65387878356 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9692340 + ... + 9699083.

It is an arithmetic number, because the mean of its divisors is an integer number (6379778496).

Almost surely, 2^65387878356 is an apocalyptic number.

It is an amenable number.

65387878356 is an abundant number, since it is smaller than the sum of its proper divisors (87726805548).

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

65387878356 is a wasteful number, since it uses less digits than its factorization.

65387878356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19391711 (or 19391709 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 66.

The spelling of 65387878356 in words is "sixty-five billion, three hundred eighty-seven million, eight hundred seventy-eight thousand, three hundred fifty-six".