56747547501191 has 2 divisors, whose sum is σ = 56747547501192. Its totient is φ = 56747547501190.

The previous prime is 56747547501173. The next prime is 56747547501193. The reversal of 56747547501191 is 19110574574765.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56747547501191 is a prime.

Together with 56747547501193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56747547501193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28373773750595 + 28373773750596.

It is an arithmetic number, because the mean of its divisors is an integer number (28373773750596).

Almost surely, 2^{56747547501191} is an apocalyptic number.

56747547501191 is a deficient number, since it is larger than the sum of its proper divisors (1).

56747547501191 is an equidigital number, since it uses as much as digits as its factorization.

56747547501191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37044000, while the sum is 62.

The spelling of 56747547501191 in words is "fifty-six trillion, seven hundred forty-seven billion, five hundred forty-seven million, five hundred one thousand, one hundred ninety-one".