2517155584991 has 4 divisors (see below), whose sum is σ = 2517309433512. Its totient is φ = 2517001736472.

The previous prime is 2517155584961. The next prime is 2517155585027. The reversal of 2517155584991 is 1994855517152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2517155584991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2517155584961) 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, 76899716 + ... + 76932441.

It is an arithmetic number, because the mean of its divisors is an integer number (629327358378).

Almost surely, 2^{2517155584991} is an apocalyptic number.

2517155584991 is a deficient number, since it is larger than the sum of its proper divisors (153848521).

2517155584991 is a wasteful number, since it uses less digits than its factorization.

2517155584991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153848520.

The product of its digits is 22680000, while the sum is 62.

The spelling of 2517155584991 in words is "two trillion, five hundred seventeen billion, one hundred fifty-five million, five hundred eighty-four thousand, nine hundred ninety-one".