6981912845369 has 32 divisors (see below), whose sum is σ = 8972034895872. Its totient is φ = 5275893672000.

The previous prime is 6981912845359. The next prime is 6981912845371. The reversal of 6981912845369 is 9635482191896.

It is not a de Polignac number, because 6981912845369 - 2¹⁶ = 6981912779833 is a prime.

It is a super-2 number, since 2×6981912845369² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6981912845339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10134557 + ... + 10801530.

It is an arithmetic number, because the mean of its divisors is an integer number (280376090496).

Almost surely, 2^{6981912845369} is an apocalyptic number.

It is an amenable number.

6981912845369 is a deficient number, since it is larger than the sum of its proper divisors (1990122050503).

6981912845369 is a wasteful number, since it uses less digits than its factorization.

6981912845369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20936237.

The product of its digits is 201553920, while the sum is 71.

The spelling of 6981912845369 in words is "six trillion, nine hundred eighty-one billion, nine hundred twelve million, eight hundred forty-five thousand, three hundred sixty-nine".