38642556485 has 8 divisors (see below), whose sum is σ = 49938073080. Its totient is φ = 28536041664.

The previous prime is 38642556479. The next prime is 38642556509. The reversal of 38642556485 is 58465524683.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3759897124 + 34882659361 = 61318^2 + 186769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38642556485 - 2⁸ = 38642556229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38642556485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297250370 + ... + 297250499.

It is an arithmetic number, because the mean of its divisors is an integer number (6242259135).

Almost surely, 2^38642556485 is an apocalyptic number.

It is an amenable number.

38642556485 is a deficient number, since it is larger than the sum of its proper divisors (11295516595).

38642556485 is a wasteful number, since it uses less digits than its factorization.

38642556485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594500887.

The product of its digits is 27648000, while the sum is 56.

The spelling of 38642556485 in words is "thirty-eight billion, six hundred forty-two million, five hundred fifty-six thousand, four hundred eighty-five".