251044472141 has 2 divisors, whose sum is σ = 251044472142. Its totient is φ = 251044472140.

The previous prime is 251044472137. The next prime is 251044472167. The reversal of 251044472141 is 141274440152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241887896041 + 9156576100 = 491821^2 + 95690^2 .

It is a cyclic number.

It is not a de Polignac number, because 251044472141 - 2² = 251044472137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251044472101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125522236070 + 125522236071.

It is an arithmetic number, because the mean of its divisors is an integer number (125522236071).

Almost surely, 2^251044472141 is an apocalyptic number.

It is an amenable number.

251044472141 is a deficient number, since it is larger than the sum of its proper divisors (1).

251044472141 is an equidigital number, since it uses as much as digits as its factorization.

251044472141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35840, while the sum is 35.

The spelling of 251044472141 in words is "two hundred fifty-one billion, forty-four million, four hundred seventy-two thousand, one hundred forty-one".