39615420072 has 64 divisors (see below), whose sum is σ = 102480840000. Its totient is φ = 12746409984.

The previous prime is 39615420029. The next prime is 39615420151. The reversal of 39615420072 is 27002451693.

It is a self number, because there is not a number n which added to its sum of digits gives 39615420072.

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, 5141679 + ... + 5149377.

It is an arithmetic number, because the mean of its divisors is an integer number (1601263125).

Almost surely, 2^39615420072 is an apocalyptic number.

It is an amenable number.

39615420072 is an abundant number, since it is smaller than the sum of its proper divisors (62865419928).

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

39615420072 is a wasteful number, since it uses less digits than its factorization.

39615420072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15130 (or 15126 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 39615420072 in words is "thirty-nine billion, six hundred fifteen million, four hundred twenty thousand, seventy-two".