395376696621 has 6 divisors (see below), whose sum is σ = 571099672910. Its totient is φ = 263584464408.

The previous prime is 395376696613. The next prime is 395376696623. The reversal of 395376696621 is 126696673593.

395376696621 is a `hidden beast` number, since 3 + 9 + 537 + 6 + 6 + 96 + 6 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 243580744521 + 151795952100 = 493539^2 + 389610^2 .

It is not a de Polignac number, because 395376696621 - 2³ = 395376696613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395376696623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21965372026 + ... + 21965372043.

Almost surely, 2^395376696621 is an apocalyptic number.

It is an amenable number.

395376696621 is a deficient number, since it is larger than the sum of its proper divisors (175722976289).

395376696621 is a wasteful number, since it uses less digits than its factorization.

395376696621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43930744075 (or 43930744072 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 63.

The spelling of 395376696621 in words is "three hundred ninety-five billion, three hundred seventy-six million, six hundred ninety-six thousand, six hundred twenty-one".