251556131083 has 2 divisors, whose sum is σ = 251556131084. Its totient is φ = 251556131082.

The previous prime is 251556131033. The next prime is 251556131119. The reversal of 251556131083 is 380131655152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251556131083 - 2¹⁷ = 251556000011 is a prime.

It is not a weakly prime, because it can be changed into another prime (251556131033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125778065541 + 125778065542.

It is an arithmetic number, because the mean of its divisors is an integer number (125778065542).

Almost surely, 2^251556131083 is an apocalyptic number.

251556131083 is a deficient number, since it is larger than the sum of its proper divisors (1).

251556131083 is an equidigital number, since it uses as much as digits as its factorization.

251556131083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 251556131083 in words is "two hundred fifty-one billion, five hundred fifty-six million, one hundred thirty-one thousand, eighty-three".