3257479136978 has 32 divisors (see below), whose sum is σ = 5463602407872. Its totient is φ = 1443719289600.

The previous prime is 3257479136971. The next prime is 3257479137013. The reversal of 3257479136978 is 8796319747523.

3257479136978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3257479136978² (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 15 ways as a sum of consecutive naturals, for example, 506150 + ... + 2602142.

It is an arithmetic number, because the mean of its divisors is an integer number (170737575246).

Almost surely, 2^{3257479136978} is an apocalyptic number.

3257479136978 is a deficient number, since it is larger than the sum of its proper divisors (2206123270894).

3257479136978 is a wasteful number, since it uses less digits than its factorization.

3257479136978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097770.

The product of its digits is 480090240, while the sum is 71.

The spelling of 3257479136978 in words is "three trillion, two hundred fifty-seven billion, four hundred seventy-nine million, one hundred thirty-six thousand, nine hundred seventy-eight".