84993357945666 has 64 divisors (see below), whose sum is σ = 177586483541760. Its totient is φ = 27067413288960.

The previous prime is 84993357945557. The next prime is 84993357945667. The reversal of 84993357945666 is 66654975339948.

84993357945666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (84993357945667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 409421856 + ... + 409629396.

It is an arithmetic number, because the mean of its divisors is an integer number (2774788805340).

Almost surely, 2^{84993357945666} is an apocalyptic number.

84993357945666 is an abundant number, since it is smaller than the sum of its proper divisors (92593125596094).

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

84993357945666 is a wasteful number, since it uses less digits than its factorization.

84993357945666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211051.

The product of its digits is 31744742400, while the sum is 84.

The spelling of 84993357945666 in words is "eighty-four trillion, nine hundred ninety-three billion, three hundred fifty-seven million, nine hundred forty-five thousand, six hundred sixty-six".