43145881764 has 48 divisors (see below), whose sum is σ = 100903380480. Its totient is φ = 14349196800.

The previous prime is 43145881759. The next prime is 43145881789. The reversal of 43145881764 is 46718854134.

It is a super-2 number, since 2×43145881764² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12435822 + ... + 12439290.

It is an arithmetic number, because the mean of its divisors is an integer number (2102153760).

Almost surely, 2^43145881764 is an apocalyptic number.

It is an amenable number.

43145881764 is an abundant number, since it is smaller than the sum of its proper divisors (57757498716).

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

43145881764 is a wasteful number, since it uses less digits than its factorization.

43145881764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540 (or 5538 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The spelling of 43145881764 in words is "forty-three billion, one hundred forty-five million, eight hundred eighty-one thousand, seven hundred sixty-four".