251048476873 has 2 divisors, whose sum is σ = 251048476874. Its totient is φ = 251048476872.

The previous prime is 251048476823. The next prime is 251048476879. The reversal of 251048476873 is 378674840152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237273229449 + 13775247424 = 487107^2 + 117368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251048476873 is a prime.

It is not a weakly prime, because it can be changed into another prime (251048476879) by changing a digit.

It is a Pierpont prime, being equal to 2³ ⋅ 3²² + 1.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125524238436 + 125524238437.

It is an arithmetic number, because the mean of its divisors is an integer number (125524238437).

Almost surely, 2^251048476873 is an apocalyptic number.

It is an amenable number.

251048476873 is a deficient number, since it is larger than the sum of its proper divisors (1).

251048476873 is an equidigital number, since it uses as much as digits as its factorization.

251048476873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 251048476873 in words is "two hundred fifty-one billion, forty-eight million, four hundred seventy-six thousand, eight hundred seventy-three".