378532620531 has 24 divisors (see below), whose sum is σ = 588867851936. Its totient is φ = 232927591680.

The previous prime is 378532620497. The next prime is 378532620533. The reversal of 378532620531 is 135026235873.

378532620531 is a `hidden beast` number, since 3 + 7 + 8 + 53 + 2 + 62 + 0 + 531 = 666.

It is not a de Polignac number, because 378532620531 - 2⁶ = 378532620467 is a prime.

It is a super-2 number, since 2×378532620531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378532620533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1793451 + ... + 1993371.

Almost surely, 2^378532620531 is an apocalyptic number.

378532620531 is a deficient number, since it is larger than the sum of its proper divisors (210335231405).

378532620531 is a wasteful number, since it uses less digits than its factorization.

378532620531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216123 (or 216120 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 378532620531 in words is "three hundred seventy-eight billion, five hundred thirty-two million, six hundred twenty thousand, five hundred thirty-one".