6481368022931 has 4 divisors (see below), whose sum is σ = 6498469258200. Its totient is φ = 6464266787664.

The previous prime is 6481368022903. The next prime is 6481368022979. The reversal of 6481368022931 is 1392208631846.

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 6481368022931 - 2³⁴ = 6464188153747 is a prime.

It is a super-2 number, since 2×6481368022931² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6481368022901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8550617066 + ... + 8550617823.

It is an arithmetic number, because the mean of its divisors is an integer number (1624617314550).

Almost surely, 2^{6481368022931} is an apocalyptic number.

6481368022931 is a deficient number, since it is larger than the sum of its proper divisors (17101235269).

6481368022931 is a wasteful number, since it uses less digits than its factorization.

6481368022931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17101235268.

The product of its (nonzero) digits is 2985984, while the sum is 53.

Multiplying 6481368022931 by its sum of digits (53), we get a palindrome (343512505215343).

The spelling of 6481368022931 in words is "six trillion, four hundred eighty-one billion, three hundred sixty-eight million, twenty-two thousand, nine hundred thirty-one".