2115976441451 has 4 divisors (see below), whose sum is σ = 2227343622600. Its totient is φ = 2004609260304.

The previous prime is 2115976441417. The next prime is 2115976441457. The reversal of 2115976441451 is 1541446795112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2115976441451 - 2³⁴ = 2098796572267 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 2115976441451.

It is not an unprimeable number, because it can be changed into a prime (2115976441457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55683590546 + ... + 55683590583.

It is an arithmetic number, because the mean of its divisors is an integer number (556835905650).

Almost surely, 2^{2115976441451} is an apocalyptic number.

2115976441451 is a deficient number, since it is larger than the sum of its proper divisors (111367181149).

2115976441451 is a wasteful number, since it uses less digits than its factorization.

2115976441451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111367181148.

The product of its digits is 1209600, while the sum is 50.

The spelling of 2115976441451 in words is "two trillion, one hundred fifteen billion, nine hundred seventy-six million, four hundred forty-one thousand, four hundred fifty-one".