2154079232885 has 8 divisors (see below), whose sum is σ = 2584904904096. Its totient is φ = 1723256836560.

The previous prime is 2154079232869. The next prime is 2154079232909. The reversal of 2154079232885 is 5882329704512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2154079232885 - 2⁴ = 2154079232869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154079232885.

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, 992690 + ... + 2300780.

It is an arithmetic number, because the mean of its divisors is an integer number (323113113012).

Almost surely, 2^{2154079232885} is an apocalyptic number.

It is an amenable number.

2154079232885 is a deficient number, since it is larger than the sum of its proper divisors (430825671211).

2154079232885 is a wasteful number, since it uses less digits than its factorization.

2154079232885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637443.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 2154079232885 in words is "two trillion, one hundred fifty-four billion, seventy-nine million, two hundred thirty-two thousand, eight hundred eighty-five".