84870525440 has 80 divisors (see below), whose sum is σ = 214200486720. Its totient is φ = 32161443840.

The previous prime is 84870525431. The next prime is 84870525473. The reversal of 84870525440 is 4452507848.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823796 + ... + 921075.

It is an arithmetic number, because the mean of its divisors is an integer number (2677506084).

Almost surely, 2^84870525440 is an apocalyptic number.

84870525440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84870525440 is an abundant number, since it is smaller than the sum of its proper divisors (129329961280).

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

84870525440 is a wasteful number, since it uses less digits than its factorization.

84870525440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744913 (or 1744897 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 47.

The spelling of 84870525440 in words is "eighty-four billion, eight hundred seventy million, five hundred twenty-five thousand, four hundred forty".