79272572057 has 24 divisors (see below), whose sum is σ = 92477613960. Its totient is φ = 67754776320.

The previous prime is 79272572017. The next prime is 79272572059. The reversal of 79272572057 is 75027527297.

It can be written as a sum of positive squares in 4 ways, for example, as 5251031296 + 74021540761 = 72464^2 + 272069^2 .

It is not a de Polignac number, because 79272572057 - 2¹⁰ = 79272571033 is a prime.

It is a super-2 number, since 2×79272572057² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79272572059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33348653 + ... + 33351029.

It is an arithmetic number, because the mean of its divisors is an integer number (3853233915).

Almost surely, 2^79272572057 is an apocalyptic number.

It is an amenable number.

79272572057 is a deficient number, since it is larger than the sum of its proper divisors (13205041903).

79272572057 is a wasteful number, since it uses less digits than its factorization.

79272572057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041 (or 4034 counting only the distinct ones).

The product of its (nonzero) digits is 4321800, while the sum is 53.

The spelling of 79272572057 in words is "seventy-nine billion, two hundred seventy-two million, five hundred seventy-two thousand, fifty-seven".