84330809365521 has 32 divisors (see below), whose sum is σ = 116587928920320. Its totient is φ = 54178089117696.

The previous prime is 84330809365519. The next prime is 84330809365553. The reversal of 84330809365521 is 12556390803348.

It is not a de Polignac number, because 84330809365521 - 2¹ = 84330809365519 is a prime.

It is a super-2 number, since 2×84330809365521² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84330809364521) 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, 359785 + ... + 12991961.

It is an arithmetic number, because the mean of its divisors is an integer number (3643372778760).

Almost surely, 2^{84330809365521} is an apocalyptic number.

It is an amenable number.

84330809365521 is a deficient number, since it is larger than the sum of its proper divisors (32257119554799).

84330809365521 is a wasteful number, since it uses less digits than its factorization.

84330809365521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12632793.

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 84330809365521 in words is "eighty-four trillion, three hundred thirty billion, eight hundred nine million, three hundred sixty-five thousand, five hundred twenty-one".