84076621818 has 32 divisors (see below), whose sum is σ = 196263972864. Its totient is φ = 23510787312.

The previous prime is 84076621807. The next prime is 84076621819. The reversal of 84076621818 is 81812667048.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84076621819) 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, 21294030 + ... + 21297977.

It is an arithmetic number, because the mean of its divisors is an integer number (6133249152).

Almost surely, 2^84076621818 is an apocalyptic number.

84076621818 is an abundant number, since it is smaller than the sum of its proper divisors (112187351046).

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

84076621818 is a wasteful number, since it uses less digits than its factorization.

84076621818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42592066.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 84076621818 in words is "eighty-four billion, seventy-six million, six hundred twenty-one thousand, eight hundred eighteen".