39875866144 has 24 divisors (see below), whose sum is σ = 80627387148. Its totient is φ = 19399069440.

The previous prime is 39875866133. The next prime is 39875866171. The reversal of 39875866144 is 44166857893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37090137744 + 2785728400 = 192588^2 + 52780^2 .

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16838287 + ... + 16840654.

Almost surely, 2^39875866144 is an apocalyptic number.

It is an amenable number.

39875866144 is an abundant number, since it is smaller than the sum of its proper divisors (40751521004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39875866144 is a wasteful number, since it uses less digits than its factorization.

39875866144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33678988 (or 33678980 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 61.

The spelling of 39875866144 in words is "thirty-nine billion, eight hundred seventy-five million, eight hundred sixty-six thousand, one hundred forty-four".