251342161620371 has 2 divisors, whose sum is σ = 251342161620372. Its totient is φ = 251342161620370.

The previous prime is 251342161620331. The next prime is 251342161620379. The reversal of 251342161620371 is 173026161243152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251342161620371 - 2²⁶ = 251342094511507 is a prime.

It is not a weakly prime, because it can be changed into another prime (251342161620379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125671080810185 + 125671080810186.

It is an arithmetic number, because the mean of its divisors is an integer number (125671080810186).

Almost surely, 2^{251342161620371} is an apocalyptic number.

251342161620371 is a deficient number, since it is larger than the sum of its proper divisors (1).

251342161620371 is an equidigital number, since it uses as much as digits as its factorization.

251342161620371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 251342161620371 in words is "two hundred fifty-one trillion, three hundred forty-two billion, one hundred sixty-one million, six hundred twenty thousand, three hundred seventy-one".