3257479136947 has 16 divisors (see below), whose sum is σ = 3784041323712. Its totient is φ = 2746223262720.

The previous prime is 3257479136941. The next prime is 3257479136953. The reversal of 3257479136947 is 7496319747523.

3257479136947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3257479136941) and next prime (3257479136953).

It is not a de Polignac number, because 3257479136947 - 2⁷ = 3257479136819 is a prime.

It is a super-2 number, since 2×3257479136947² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3257479136941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9523563 + ... + 9859675.

It is an arithmetic number, because the mean of its divisors is an integer number (236502582732).

Almost surely, 2^{3257479136947} is an apocalyptic number.

3257479136947 is a deficient number, since it is larger than the sum of its proper divisors (526562186765).

3257479136947 is a wasteful number, since it uses less digits than its factorization.

3257479136947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358878.

The product of its digits is 240045120, while the sum is 67.

The spelling of 3257479136947 in words is "three trillion, two hundred fifty-seven billion, four hundred seventy-nine million, one hundred thirty-six thousand, nine hundred forty-seven".