2391375792121 has 8 divisors (see below), whose sum is σ = 2495419081920. Its totient is φ = 2287338371472.

The previous prime is 2391375792107. The next prime is 2391375792137. The reversal of 2391375792121 is 1212975731932.

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

It is a cyclic number.

It is not a de Polignac number, because 2391375792121 - 2¹⁹ = 2391375267833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2391375792101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624355 + ... + 2274328.

It is an arithmetic number, because the mean of its divisors is an integer number (311927385240).

Almost surely, 2^{2391375792121} is an apocalyptic number.

It is an amenable number.

2391375792121 is a deficient number, since it is larger than the sum of its proper divisors (104043289799).

2391375792121 is a wasteful number, since it uses less digits than its factorization.

2391375792121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934575.

The product of its digits is 1428840, while the sum is 52.

The spelling of 2391375792121 in words is "two trillion, three hundred ninety-one billion, three hundred seventy-five million, seven hundred ninety-two thousand, one hundred twenty-one".