65138014572 has 24 divisors (see below), whose sum is σ = 160929212976. Its totient is φ = 20435455488.

The previous prime is 65138014511. The next prime is 65138014577. The reversal of 65138014572 is 27541083156.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65138014577) 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 7 ways as a sum of consecutive naturals, for example, 159651793 + ... + 159652200.

It is an arithmetic number, because the mean of its divisors is an integer number (6705383874).

Almost surely, 2^65138014572 is an apocalyptic number.

It is an amenable number.

65138014572 is an abundant number, since it is smaller than the sum of its proper divisors (95791198404).

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

65138014572 is a wasteful number, since it uses less digits than its factorization.

65138014572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319304017 (or 319304015 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 65138014572 in words is "sixty-five billion, one hundred thirty-eight million, fourteen thousand, five hundred seventy-two".