376311777721 has 4 divisors (see below), whose sum is σ = 410521939344. Its totient is φ = 342101616100.

The previous prime is 376311777661. The next prime is 376311777727. The reversal of 376311777721 is 127777113673.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 376311777721 - 2²⁵ = 376278223289 is a prime.

It is a super-2 number, since 2×376311777721² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (376311777727) 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, 17105080795 + ... + 17105080816.

It is an arithmetic number, because the mean of its divisors is an integer number (102630484836).

Almost surely, 2^376311777721 is an apocalyptic number.

It is an amenable number.

376311777721 is a deficient number, since it is larger than the sum of its proper divisors (34210161623).

376311777721 is a wasteful number, since it uses less digits than its factorization.

376311777721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34210161622.

The product of its digits is 1815156, while the sum is 52.

The spelling of 376311777721 in words is "three hundred seventy-six billion, three hundred eleven million, seven hundred seventy-seven thousand, seven hundred twenty-one".