39875866145 has 16 divisors (see below), whose sum is σ = 50685730560. Its totient is φ = 30012374784.

The previous prime is 39875866133. The next prime is 39875866171. The reversal of 39875866145 is 54166857893.

It is a cyclic number.

It is not a de Polignac number, because 39875866145 - 2⁶ = 39875866081 is a prime.

It is a super-2 number, since 2×39875866145² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128264 + ... + 310166.

It is an arithmetic number, because the mean of its divisors is an integer number (3167858160).

Almost surely, 2^39875866145 is an apocalyptic number.

It is an amenable number.

39875866145 is a deficient number, since it is larger than the sum of its proper divisors (10809864415).

39875866145 is a wasteful number, since it uses less digits than its factorization.

39875866145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184504.

The product of its digits is 43545600, while the sum is 62.

The spelling of 39875866145 in words is "thirty-nine billion, eight hundred seventy-five million, eight hundred sixty-six thousand, one hundred forty-five".