376277161221 has 24 divisors (see below), whose sum is σ = 588352810136. Its totient is φ = 230355394560.

The previous prime is 376277161219. The next prime is 376277161241. The reversal of 376277161221 is 122161772673.

376277161221 is a `hidden beast` number, since 3 + 7 + 6 + 2 + 7 + 7 + 1 + 612 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25085808225 + 351191352996 = 158385^2 + 592614^2 .

It is not a de Polignac number, because 376277161221 - 2¹ = 376277161219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (376277161201) 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 23 ways as a sum of consecutive naturals, for example, 8309140 + ... + 8354301.

Almost surely, 2^376277161221 is an apocalyptic number.

It is an amenable number.

376277161221 is a deficient number, since it is larger than the sum of its proper divisors (212075648915).

376277161221 is a wasteful number, since it uses less digits than its factorization.

376277161221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16663653 (or 16663650 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The spelling of 376277161221 in words is "three hundred seventy-six billion, two hundred seventy-seven million, one hundred sixty-one thousand, two hundred twenty-one".