634680911139 has 16 divisors (see below), whose sum is σ = 971760247680. Its totient is φ = 364410092160.

The previous prime is 634680911093. The next prime is 634680911147. The reversal of 634680911139 is 931119086436.

634680911139 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634680911139 - 2⁸ = 634680910883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634680911091 and 634680911100.

It is not an unprimeable number, because it can be changed into a prime (634680911159) 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, 506124502 + ... + 506125755.

It is an arithmetic number, because the mean of its divisors is an integer number (60735015480).

Almost surely, 2^634680911139 is an apocalyptic number.

634680911139 is a deficient number, since it is larger than the sum of its proper divisors (337079336541).

634680911139 is a wasteful number, since it uses less digits than its factorization.

634680911139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012250290.

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 634680911139 in words is "six hundred thirty-four billion, six hundred eighty million, nine hundred eleven thousand, one hundred thirty-nine".