16572379077 has 6 divisors (see below), whose sum is σ = 23937880902. Its totient is φ = 11048252712.

The previous prime is 16572379073. The next prime is 16572379133. The reversal of 16572379077 is 77097327561.

It can be written as a sum of positive squares in only one way, i.e., 11073563361 + 5498815716 = 105231^2 + 74154^2 .

It is not a de Polignac number, because 16572379077 - 2² = 16572379073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16572379073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 920687718 + ... + 920687735.

It is an arithmetic number, because the mean of its divisors is an integer number (3989646817).

Almost surely, 2^16572379077 is an apocalyptic number.

It is an amenable number.

16572379077 is a deficient number, since it is larger than the sum of its proper divisors (7365501825).

16572379077 is a wasteful number, since it uses less digits than its factorization.

16572379077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841375459 (or 1841375456 counting only the distinct ones).

The product of its (nonzero) digits is 3889620, while the sum is 54.

The spelling of 16572379077 in words is "sixteen billion, five hundred seventy-two million, three hundred seventy-nine thousand, seventy-seven".