38620989506816 has 18 divisors (see below), whose sum is σ = 77091115773882. Its totient is φ = 19310494753280.

The previous prime is 38620989506809. The next prime is 38620989506831. The reversal of 38620989506816 is 61860598902683.

It can be written as a sum of positive squares in only one way, i.e., 30783677276416 + 7837312230400 = 5548304^2 + 2799520^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38620989506816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75431619875 + ... + 75431620386.

Almost surely, 2^{38620989506816} is an apocalyptic number.

It is an amenable number.

38620989506816 is a deficient number, since it is larger than the sum of its proper divisors (38470126267066).

38620989506816 is an equidigital number, since it uses as much as digits as its factorization.

38620989506816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150863240277 (or 150863240263 counting only the distinct ones).

The product of its (nonzero) digits is 268738560, while the sum is 71.

The spelling of 38620989506816 in words is "thirty-eight trillion, six hundred twenty billion, nine hundred eighty-nine million, five hundred six thousand, eight hundred sixteen".