39721125104 has 10 divisors (see below), whose sum is σ = 76959679920. Its totient is φ = 19860562544.

The previous prime is 39721125083. The next prime is 39721125113. The reversal of 39721125104 is 40152112793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1241285144 + ... + 1241285175.

It is an arithmetic number, because the mean of its divisors is an integer number (7695967992).

Almost surely, 2^39721125104 is an apocalyptic number.

It is an amenable number.

39721125104 is a deficient number, since it is larger than the sum of its proper divisors (37238554816).

39721125104 is a wasteful number, since it uses less digits than its factorization.

39721125104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482570327 (or 2482570321 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

Adding to 39721125104 its reverse (40152112793), we get a palindrome (79873237897).

The spelling of 39721125104 in words is "thirty-nine billion, seven hundred twenty-one million, one hundred twenty-five thousand, one hundred four".