251001212143049 has 2 divisors, whose sum is σ = 251001212143050. Its totient is φ = 251001212143048.

The previous prime is 251001212143037. The next prime is 251001212143061. The reversal of 251001212143049 is 940341212100152.

It is a balanced prime because it is at equal distance from previous prime (251001212143037) and next prime (251001212143061).

It can be written as a sum of positive squares in only one way, i.e., 160503434310025 + 90497777833024 = 12668995^2 + 9513032^2 .

It is a cyclic number.

It is not a de Polignac number, because 251001212143049 - 2²⁸ = 251000943707593 is a prime.

It is not a weakly prime, because it can be changed into another prime (251001212143009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125500606071524 + 125500606071525.

It is an arithmetic number, because the mean of its divisors is an integer number (125500606071525).

Almost surely, 2^{251001212143049} is an apocalyptic number.

It is an amenable number.

251001212143049 is a deficient number, since it is larger than the sum of its proper divisors (1).

251001212143049 is an equidigital number, since it uses as much as digits as its factorization.

251001212143049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 251001212143049 in words is "two hundred fifty-one trillion, one billion, two hundred twelve million, one hundred forty-three thousand, forty-nine".