39772145780 has 24 divisors (see below), whose sum is σ = 83736230760. Its totient is φ = 15867958400.

The previous prime is 39772145773. The next prime is 39772145837. The reversal of 39772145780 is 8754127793.

It can be written as a sum of positive squares in 4 ways, for example, as 13380964 + 39758764816 = 3658^2 + 199396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548271 + ... + 2563830.

It is an arithmetic number, because the mean of its divisors is an integer number (3489009615).

Almost surely, 2^39772145780 is an apocalyptic number.

It is an amenable number.

39772145780 is an abundant number, since it is smaller than the sum of its proper divisors (43964084980).

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

39772145780 is a wasteful number, since it uses less digits than its factorization.

39772145780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112499 (or 5112497 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 39772145780 in words is "thirty-nine billion, seven hundred seventy-two million, one hundred forty-five thousand, seven hundred eighty".