2154089261824 has 72 divisors (see below), whose sum is σ = 4347687828960. Its totient is φ = 1065058664448.

The previous prime is 2154089261783. The next prime is 2154089261839. The reversal of 2154089261824 is 4281629804512.

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, 30483237 + ... + 30553819.

It is an arithmetic number, because the mean of its divisors is an integer number (60384553180).

Almost surely, 2^{2154089261824} 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 2154089261824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2173843914480).

2154089261824 is an abundant number, since it is smaller than the sum of its proper divisors (2193598567136).

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

2154089261824 is an equidigital number, since it uses as much as digits as its factorization.

2154089261824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71925 (or 71911 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 2154089261824 in words is "two trillion, one hundred fifty-four billion, eighty-nine million, two hundred sixty-one thousand, eight hundred twenty-four".