8120639021754 has 64 divisors (see below), whose sum is σ = 18622362931200. Its totient is φ = 2312576185728.

The previous prime is 8120639021717. The next prime is 8120639021809. The reversal of 8120639021754 is 4571209360218.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30611974 + ... + 30876110.

It is an arithmetic number, because the mean of its divisors is an integer number (290974420800).

It is a 1-persistent number, because it is pandigital, but 2⋅8120639021754 = 16241278043508 is not.

Almost surely, 2^{8120639021754} is an apocalyptic number.

8120639021754 is an abundant number, since it is smaller than the sum of its proper divisors (10501723909446).

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

8120639021754 is a wasteful number, since it uses less digits than its factorization.

8120639021754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266547.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 8120639021754 in words is "eight trillion, one hundred twenty billion, six hundred thirty-nine million, twenty-one thousand, seven hundred fifty-four".