6978915844901 has 24 divisors (see below), whose sum is σ = 9421777744704. Its totient is φ = 5019799599360.

The previous prime is 6978915844897. The next prime is 6978915844919. The reversal of 6978915844901 is 1094485198796.

It is not a de Polignac number, because 6978915844901 - 2² = 6978915844897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978915844301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268138676 + ... + 268164701.

It is an arithmetic number, because the mean of its divisors is an integer number (392574072696).

Almost surely, 2^{6978915844901} is an apocalyptic number.

It is an amenable number.

6978915844901 is a deficient number, since it is larger than the sum of its proper divisors (2442861899803).

6978915844901 is a wasteful number, since it uses less digits than its factorization.

6978915844901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536303421 (or 536303408 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 71.

The spelling of 6978915844901 in words is "six trillion, nine hundred seventy-eight billion, nine hundred fifteen million, eight hundred forty-four thousand, nine hundred one".