2551131685611 has 6 divisors (see below), whose sum is σ = 3684967990340. Its totient is φ = 1700754457068.

The previous prime is 2551131685601. The next prime is 2551131685651. The reversal of 2551131685611 is 1165861311552.

2551131685611 is a `hidden beast` number, since 2 + 5 + 5 + 1 + 13 + 16 + 8 + 5 + 611 = 666.

It is not a de Polignac number, because 2551131685611 - 2³⁴ = 2533951816427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551131685601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141729538081 + ... + 141729538098.

Almost surely, 2^{2551131685611} is an apocalyptic number.

2551131685611 is a deficient number, since it is larger than the sum of its proper divisors (1133836304729).

2551131685611 is a wasteful number, since it uses less digits than its factorization.

2551131685611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283459076185 (or 283459076182 counting only the distinct ones).

The product of its digits is 216000, while the sum is 45.

The spelling of 2551131685611 in words is "two trillion, five hundred fifty-one billion, one hundred thirty-one million, six hundred eighty-five thousand, six hundred eleven".