84081913136720 has 40 divisors (see below), whose sum is σ = 195713356356744. Its totient is φ = 33594415437312.

The previous prime is 84081913136657. The next prime is 84081913136761. The reversal of 84081913136720 is 2763131918048.

It can be written as a sum of positive squares in 4 ways, for example, as 22426627176976 + 61655285959744 = 4735676^2 + 7852088^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599145299 + ... + 599285618.

Almost surely, 2^{84081913136720} is an apocalyptic number.

84081913136720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84081913136720 is an abundant number, since it is smaller than the sum of its proper divisors (111631443220024).

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

84081913136720 is a wasteful number, since it uses less digits than its factorization.

84081913136720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198431807 (or 1198431801 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 84081913136720 in words is "eighty-four trillion, eighty-one billion, nine hundred thirteen million, one hundred thirty-six thousand, seven hundred twenty".