39965621627980 has 12 divisors (see below), whose sum is σ = 83927805418800. Its totient is φ = 15986248651184.

The previous prime is 39965621627941. The next prime is 39965621628007. The reversal of 39965621627980 is 8972612656993.

It is a super-2 number, since 2×39965621627980² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999140540680 + ... + 999140540719.

It is an arithmetic number, because the mean of its divisors is an integer number (6993983784900).

Almost surely, 2^{39965621627980} is an apocalyptic number.

It is an amenable number.

39965621627980 is an abundant number, since it is smaller than the sum of its proper divisors (43962183790820).

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

39965621627980 is a wasteful number, since it uses less digits than its factorization.

39965621627980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998281081408 (or 1998281081406 counting only the distinct ones).

The product of its (nonzero) digits is 529079040, while the sum is 73.

The spelling of 39965621627980 in words is "thirty-nine trillion, nine hundred sixty-five billion, six hundred twenty-one million, six hundred twenty-seven thousand, nine hundred eighty".