3257479136979 has 12 divisors (see below), whose sum is σ = 4706244367032. Its totient is φ = 2171192731200.

The previous prime is 3257479136971. The next prime is 3257479137013. The reversal of 3257479136979 is 9796319747523.

It is a happy number.

3257479136979 is a `hidden beast` number, since 3 + 2 + 57 + 479 + 1 + 36 + 9 + 79 = 666.

It is not a de Polignac number, because 3257479136979 - 2³ = 3257479136971 is a prime.

It is a super-2 number, since 2×3257479136979² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3257479136971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38290717 + ... + 38375694.

It is an arithmetic number, because the mean of its divisors is an integer number (392187030586).

Almost surely, 2^{3257479136979} is an apocalyptic number.

3257479136979 is a deficient number, since it is larger than the sum of its proper divisors (1448765230053).

3257479136979 is a wasteful number, since it uses less digits than its factorization.

3257479136979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76671138 (or 76671135 counting only the distinct ones).

The product of its digits is 540101520, while the sum is 72.

The spelling of 3257479136979 in words is "three trillion, two hundred fifty-seven billion, four hundred seventy-nine million, one hundred thirty-six thousand, nine hundred seventy-nine".