6901438320139 has 4 divisors (see below), whose sum is σ = 7528841803800. Its totient is φ = 6274034836480.

The previous prime is 6901438320131. The next prime is 6901438320191. The reversal of 6901438320139 is 9310238341096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6901438320139 - 2³ = 6901438320131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6901438320092 and 6901438320101.

It is not an unprimeable number, because it can be changed into a prime (6901438320131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313701741814 + ... + 313701741835.

It is an arithmetic number, because the mean of its divisors is an integer number (1882210450950).

Almost surely, 2^{6901438320139} is an apocalyptic number.

6901438320139 is a deficient number, since it is larger than the sum of its proper divisors (627403483661).

6901438320139 is a wasteful number, since it uses less digits than its factorization.

6901438320139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627403483660.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 6901438320139 in words is "six trillion, nine hundred one billion, four hundred thirty-eight million, three hundred twenty thousand, one hundred thirty-nine".