5651261617257 has 12 divisors (see below), whose sum is σ = 8426253881344. Its totient is φ = 3645975236760.

The previous prime is 5651261617223. The next prime is 5651261617291. The reversal of 5651261617257 is 7527161621565.

5651261617257 is a `hidden beast` number, since 5 + 6 + 5 + 1 + 2 + 616 + 17 + 2 + 5 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (5651261617223) and next prime (5651261617291).

It is not a de Polignac number, because 5651261617257 - 2²² = 5651257422953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5651261617207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10127708713 + ... + 10127709270.

Almost surely, 2^{5651261617257} is an apocalyptic number.

It is an amenable number.

5651261617257 is a deficient number, since it is larger than the sum of its proper divisors (2774992264087).

5651261617257 is a wasteful number, since it uses less digits than its factorization.

5651261617257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20255418020 (or 20255418017 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 54.

The spelling of 5651261617257 in words is "five trillion, six hundred fifty-one billion, two hundred sixty-one million, six hundred seventeen thousand, two hundred fifty-seven".