13031129978 has 16 divisors (see below), whose sum is σ = 19791717120. Its totient is φ = 6433966656.

The previous prime is 13031129963. The next prime is 13031129983. The reversal of 13031129978 is 87992113031.

13031129978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 348578 + ... + 384146.

It is an arithmetic number, because the mean of its divisors is an integer number (1236982320).

Almost surely, 2^13031129978 is an apocalyptic number.

13031129978 is a deficient number, since it is larger than the sum of its proper divisors (6760587142).

13031129978 is a wasteful number, since it uses less digits than its factorization.

13031129978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37861.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 13031129978 in words is "thirteen billion, thirty-one million, one hundred twenty-nine thousand, nine hundred seventy-eight".