2158859702604 has 144 divisors (see below), whose sum is σ = 5868421278048. Its totient is φ = 615107328000.

The previous prime is 2158859702591. The next prime is 2158859702611. The reversal of 2158859702604 is 4062079588512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25159534 + ... + 25245194.

It is an arithmetic number, because the mean of its divisors is an integer number (40752925542).

Almost surely, 2^{2158859702604} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158859702604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2934210639024).

2158859702604 is an abundant number, since it is smaller than the sum of its proper divisors (3709561575444).

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

2158859702604 is a wasteful number, since it uses less digits than its factorization.

2158859702604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86728 (or 86715 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 2158859702604 in words is "two trillion, one hundred fifty-eight billion, eight hundred fifty-nine million, seven hundred two thousand, six hundred four".