251377086992131 has 2 divisors, whose sum is σ = 251377086992132. Its totient is φ = 251377086992130.

The previous prime is 251377086992117. The next prime is 251377086992173. The reversal of 251377086992131 is 131299680773152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251377086992131 - 2²⁷ = 251376952774403 is a prime.

It is a super-2 number, since 2×251377086992131² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (251377086995131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125688543496065 + 125688543496066.

It is an arithmetic number, because the mean of its divisors is an integer number (125688543496066).

Almost surely, 2^{251377086992131} is an apocalyptic number.

251377086992131 is a deficient number, since it is larger than the sum of its proper divisors (1).

251377086992131 is an equidigital number, since it uses as much as digits as its factorization.

251377086992131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 251377086992131 in words is "two hundred fifty-one trillion, three hundred seventy-seven billion, eighty-six million, nine hundred ninety-two thousand, one hundred thirty-one".