38412586642 has 4 divisors (see below), whose sum is σ = 57618879966. Its totient is φ = 19206293320.

The previous prime is 38412586621. The next prime is 38412586673. The reversal of 38412586642 is 24668521483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24668521483 = 17 ⋅1451089499.

It can be written as a sum of positive squares in only one way, i.e., 26843217921 + 11569368721 = 163839^2 + 107561^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9603146659 + ... + 9603146662.

Almost surely, 2^38412586642 is an apocalyptic number.

38412586642 is a deficient number, since it is larger than the sum of its proper divisors (19206293324).

38412586642 is a wasteful number, since it uses less digits than its factorization.

38412586642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206293323.

The product of its digits is 2211840, while the sum is 49.

The spelling of 38412586642 in words is "thirty-eight billion, four hundred twelve million, five hundred eighty-six thousand, six hundred forty-two".