39971500872 has 32 divisors (see below), whose sum is σ = 100898940480. Its totient is φ = 13194475200.

The previous prime is 39971500847. The next prime is 39971500873. The reversal of 39971500872 is 27800517993.

39971500872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (39971500873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8082379 + ... + 8087322.

It is an arithmetic number, because the mean of its divisors is an integer number (3153091890).

Almost surely, 2^39971500872 is an apocalyptic number.

It is an amenable number.

39971500872 is an abundant number, since it is smaller than the sum of its proper divisors (60927439608).

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

39971500872 is a wasteful number, since it uses less digits than its factorization.

39971500872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16169813 (or 16169809 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 39971500872 in words is "thirty-nine billion, nine hundred seventy-one million, five hundred thousand, eight hundred seventy-two".