2551764804157 has 4 divisors (see below), whose sum is σ = 2551771601280. Its totient is φ = 2551758007036.

The previous prime is 2551764804143. The next prime is 2551764804191. The reversal of 2551764804157 is 7514084671552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2551764804157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2551764804098 and 2551764804107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551764804107) 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, 2800333 + ... + 3597970.

It is an arithmetic number, because the mean of its divisors is an integer number (637942900320).

Almost surely, 2^{2551764804157} is an apocalyptic number.

It is an amenable number.

2551764804157 is a deficient number, since it is larger than the sum of its proper divisors (6797123).

2551764804157 is an equidigital number, since it uses as much as digits as its factorization.

2551764804157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6797122.

The product of its (nonzero) digits is 9408000, while the sum is 55.

The spelling of 2551764804157 in words is "two trillion, five hundred fifty-one billion, seven hundred sixty-four million, eight hundred four thousand, one hundred fifty-seven".