43278811464 has 32 divisors (see below), whose sum is σ = 123653747520. Its totient is φ = 12365374656.

The previous prime is 43278811409. The next prime is 43278811469. The reversal of 43278811464 is 46411887234.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (43278811469) 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, 128805819 + ... + 128806154.

It is an arithmetic number, because the mean of its divisors is an integer number (3864179610).

Almost surely, 2^43278811464 is an apocalyptic number.

It is an amenable number.

43278811464 is an abundant number, since it is smaller than the sum of its proper divisors (80374936056).

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

43278811464 is a wasteful number, since it uses less digits than its factorization.

43278811464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257611989 (or 257611985 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The spelling of 43278811464 in words is "forty-three billion, two hundred seventy-eight million, eight hundred eleven thousand, four hundred sixty-four".