39966125502 has 16 divisors (see below), whose sum is σ = 80422634880. Its totient is φ = 13240311192.

The previous prime is 39966125501. The next prime is 39966125519. The reversal of 39966125502 is 20552166993.

It is a happy number.

It is a super-2 number, since 2×39966125502² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39966125501) 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, 20431602 + ... + 20433557.

It is an arithmetic number, because the mean of its divisors is an integer number (5026414680).

Almost surely, 2^39966125502 is an apocalyptic number.

39966125502 is an abundant number, since it is smaller than the sum of its proper divisors (40456509378).

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

39966125502 is a wasteful number, since it uses less digits than its factorization.

39966125502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40865327.

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 39966125502 in words is "thirty-nine billion, nine hundred sixty-six million, one hundred twenty-five thousand, five hundred two".