43990268540 has 12 divisors (see below), whose sum is σ = 92379563976. Its totient is φ = 17596107408.

The previous prime is 43990268527. The next prime is 43990268563. The reversal of 43990268540 is 4586209934.

43990268540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1099756694 + ... + 1099756733.

It is an arithmetic number, because the mean of its divisors is an integer number (7698296998).

Almost surely, 2^43990268540 is an apocalyptic number.

It is an amenable number.

43990268540 is an abundant number, since it is smaller than the sum of its proper divisors (48389295436).

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

43990268540 is a wasteful number, since it uses less digits than its factorization.

43990268540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199513436 (or 2199513434 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 43990268540 in words is "forty-three billion, nine hundred ninety million, two hundred sixty-eight thousand, five hundred forty".