43977649628 has 24 divisors (see below), whose sum is σ = 85380341760. Its totient is φ = 19651028720.

The previous prime is 43977649627. The next prime is 43977649643. The reversal of 43977649628 is 82694677934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43977649627) 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, 8467676 + ... + 8472867.

It is an arithmetic number, because the mean of its divisors is an integer number (3557514240).

Almost surely, 2^43977649628 is an apocalyptic number.

It is an amenable number.

43977649628 is a deficient number, since it is larger than the sum of its proper divisors (41402692132).

43977649628 is a wasteful number, since it uses less digits than its factorization.

43977649628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940617 (or 16940615 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 65.

The spelling of 43977649628 in words is "forty-three billion, nine hundred seventy-seven million, six hundred forty-nine thousand, six hundred twenty-eight".