43079779872 has 72 divisors (see below), whose sum is σ = 122530750524. Its totient is φ = 14357274624.

The previous prime is 43079779871. The next prime is 43079779877. The reversal of 43079779872 is 27897797034.

It can be written as a sum of positive squares in 2 ways, for example, as 41777724816 + 1302055056 = 204396^2 + 36084^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×43079779872³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (43079779871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2119068 + ... + 2139300.

Almost surely, 2^43079779872 is an apocalyptic number.

It is an amenable number.

43079779872 is an abundant number, since it is smaller than the sum of its proper divisors (79450970652).

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

43079779872 is a wasteful number, since it uses less digits than its factorization.

43079779872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27642 (or 27631 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 63.

The spelling of 43079779872 in words is "forty-three billion, seventy-nine million, seven hundred seventy-nine thousand, eight hundred seventy-two".