65212782375 has 32 divisors (see below), whose sum is σ = 116861314752. Its totient is φ = 32104752000.

The previous prime is 65212782367. The next prime is 65212782377. The reversal of 65212782375 is 57328721256.

It is not a de Polignac number, because 65212782375 - 2³ = 65212782367 is a prime.

It is a super-2 number, since 2×65212782375² (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 (65212782377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6683616 + ... + 6693365.

It is an arithmetic number, because the mean of its divisors is an integer number (3651916086).

Almost surely, 2^65212782375 is an apocalyptic number.

65212782375 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65212782375 is a deficient number, since it is larger than the sum of its proper divisors (51648532377).

65212782375 is a wasteful number, since it uses less digits than its factorization.

65212782375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13377012 (or 13377002 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The spelling of 65212782375 in words is "sixty-five billion, two hundred twelve million, seven hundred eighty-two thousand, three hundred seventy-five".