251266164053 has 2 divisors, whose sum is σ = 251266164054. Its totient is φ = 251266164052.

The previous prime is 251266164029. The next prime is 251266164109. The reversal of 251266164053 is 350461662152.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234433177489 + 16832986564 = 484183^2 + 129742^2 .

It is a cyclic number.

It is not a de Polignac number, because 251266164053 - 2³⁶ = 182546687317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251266164053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251266164953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125633082026 + 125633082027.

It is an arithmetic number, because the mean of its divisors is an integer number (125633082027).

Almost surely, 2^251266164053 is an apocalyptic number.

It is an amenable number.

251266164053 is a deficient number, since it is larger than the sum of its proper divisors (1).

251266164053 is an equidigital number, since it uses as much as digits as its factorization.

251266164053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 251266164053 in words is "two hundred fifty-one billion, two hundred sixty-six million, one hundred sixty-four thousand, fifty-three".