43977649629 has 32 divisors (see below), whose sum is σ = 63312076800. Its totient is φ = 27073759680.

The previous prime is 43977649627. The next prime is 43977649643. The reversal of 43977649629 is 92694677934.

It is not a de Polignac number, because 43977649629 - 2¹ = 43977649627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43977649629.

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 31 ways as a sum of consecutive naturals, for example, 871707 + ... + 920775.

It is an arithmetic number, because the mean of its divisors is an integer number (1978502400).

Almost surely, 2^43977649629 is an apocalyptic number.

It is an amenable number.

43977649629 is a deficient number, since it is larger than the sum of its proper divisors (19334427171).

43977649629 is a wasteful number, since it uses less digits than its factorization.

43977649629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49545.

The product of its digits is 123451776, while the sum is 66.

The spelling of 43977649629 in words is "forty-three billion, nine hundred seventy-seven million, six hundred forty-nine thousand, six hundred twenty-nine".