251253775998079 has 2 divisors, whose sum is σ = 251253775998080. Its totient is φ = 251253775998078.

The previous prime is 251253775998037. The next prime is 251253775998119. The reversal of 251253775998079 is 970899577352152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251253775998079 - 2³⁷ = 251116337044607 is a prime.

It is a super-2 number, since 2×251253775998079² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251253775998019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125626887999039 + 125626887999040.

It is an arithmetic number, because the mean of its divisors is an integer number (125626887999040).

Almost surely, 2^{251253775998079} is an apocalyptic number.

251253775998079 is a deficient number, since it is larger than the sum of its proper divisors (1).

251253775998079 is an equidigital number, since it uses as much as digits as its factorization.

251253775998079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000564000, while the sum is 79.

The spelling of 251253775998079 in words is "two hundred fifty-one trillion, two hundred fifty-three billion, seven hundred seventy-five million, nine hundred ninety-eight thousand, seventy-nine".