38581356544 has 24 divisors (see below), whose sum is σ = 77143878630. Its totient is φ = 19290677248.

The previous prime is 38581356467. The next prime is 38581356607. The reversal of 38581356544 is 44565318583.

It can be written as a sum of positive squares in only one way, i.e., 29760390144 + 8820966400 = 172512^2 + 93920^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38581356491 and 38581356500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9417229 + ... + 9421324.

Almost surely, 2^38581356544 is an apocalyptic number.

It is an amenable number.

38581356544 is a deficient number, since it is larger than the sum of its proper divisors (38562522086).

38581356544 is an equidigital number, since it uses as much as digits as its factorization.

38581356544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18838575 (or 18838555 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 52.

The spelling of 38581356544 in words is "thirty-eight billion, five hundred eighty-one million, three hundred fifty-six thousand, five hundred forty-four".