84555075840 has 144 divisors (see below), whose sum is σ = 277346827968. Its totient is φ = 21938577408.

The previous prime is 84555075811. The next prime is 84555075841. The reversal of 84555075840 is 4857055548.

It is not an unprimeable number, because it can be changed into a prime (84555075841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155482 + ... + 439641.

Almost surely, 2^84555075840 is an apocalyptic number.

84555075840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84555075840 is an abundant number, since it is smaller than the sum of its proper divisors (192791752128).

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

84555075840 is a wasteful number, since it uses less digits than its factorization.

84555075840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595184 (or 595170 counting only the distinct ones).

The product of its (nonzero) digits is 4480000, while the sum is 51.

The spelling of 84555075840 in words is "eighty-four billion, five hundred fifty-five million, seventy-five thousand, eight hundred forty".