387332076961 has 4 divisors (see below), whose sum is σ = 387497535124. Its totient is φ = 387166618800.

The previous prime is 387332076947. The next prime is 387332076973. The reversal of 387332076961 is 169670233783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169670233783 = 67 ⋅2532391549.

It can be written as a sum of positive squares in 2 ways, for example, as 321580860561 + 65751216400 = 567081^2 + 256420^2 .

It is a cyclic number.

It is not a de Polignac number, because 387332076961 - 2³⁷ = 249893123489 is a prime.

It is a super-2 number, since 2×387332076961² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387332076931) 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, 82725570 + ... + 82730251.

It is an arithmetic number, because the mean of its divisors is an integer number (96874383781).

Almost surely, 2^387332076961 is an apocalyptic number.

It is an amenable number.

387332076961 is a deficient number, since it is larger than the sum of its proper divisors (165458163).

387332076961 is a wasteful number, since it uses less digits than its factorization.

387332076961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165458162.

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 387332076961 in words is "three hundred eighty-seven billion, three hundred thirty-two million, seventy-six thousand, nine hundred sixty-one".