6381137313608 has 8 divisors (see below), whose sum is σ = 11964632463030. Its totient is φ = 3190568656800.

The previous prime is 6381137313583. The next prime is 6381137313613. The reversal of 6381137313608 is 8063137311836.

It can be written as a sum of positive squares in only one way, i.e., 6362390774884 + 18746538724 = 2522378^2 + 136918^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398821082093 + ... + 398821082108.

Almost surely, 2^{6381137313608} is an apocalyptic number.

It is an amenable number.

6381137313608 is a deficient number, since it is larger than the sum of its proper divisors (5583495149422).

6381137313608 is a wasteful number, since it uses less digits than its factorization.

6381137313608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797642164207 (or 797642164203 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 6381137313608 in words is "six trillion, three hundred eighty-one billion, one hundred thirty-seven million, three hundred thirteen thousand, six hundred eight".