65139776750 has 32 divisors (see below), whose sum is σ = 122749293888. Its totient is φ = 25883340000.

The previous prime is 65139776729. The next prime is 65139776753. The reversal of 65139776750 is 5767793156.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65139776753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825029 + ... + 900528.

It is an arithmetic number, because the mean of its divisors is an integer number (3835915434).

Almost surely, 2^65139776750 is an apocalyptic number.

65139776750 is a deficient number, since it is larger than the sum of its proper divisors (57609517138).

65139776750 is a wasteful number, since it uses less digits than its factorization.

65139776750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725725 (or 1725715 counting only the distinct ones).

The product of its (nonzero) digits is 8334900, while the sum is 56.

The spelling of 65139776750 in words is "sixty-five billion, one hundred thirty-nine million, seven hundred seventy-six thousand, seven hundred fifty".