84290373921 has 12 divisors (see below), whose sum is σ = 121697345328. Its totient is φ = 51870999024.

The previous prime is 84290373899. The next prime is 84290373931. The reversal of 84290373921 is 12937309248.

It is not a de Polignac number, because 84290373921 - 2²² = 84286179617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84290373931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83126095 + ... + 83127108.

It is an arithmetic number, because the mean of its divisors is an integer number (10141445444).

Almost surely, 2^84290373921 is an apocalyptic number.

It is an amenable number.

84290373921 is a deficient number, since it is larger than the sum of its proper divisors (37406971407).

84290373921 is a wasteful number, since it uses less digits than its factorization.

84290373921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166253232 (or 166253219 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 84290373921 in words is "eighty-four billion, two hundred ninety million, three hundred seventy-three thousand, nine hundred twenty-one".