1251662610201 has 16 divisors (see below), whose sum is σ = 1744662618240. Its totient is φ = 796686295680.

The previous prime is 1251662610181. The next prime is 1251662610229. The reversal of 1251662610201 is 1020162661521.

It is not a de Polignac number, because 1251662610201 - 2¹⁰ = 1251662609177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1251662610901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16727956 + ... + 16802613.

It is an arithmetic number, because the mean of its divisors is an integer number (109041413640).

Almost surely, 2^{1251662610201} is an apocalyptic number.

It is an amenable number.

1251662610201 is a deficient number, since it is larger than the sum of its proper divisors (493000008039).

1251662610201 is a wasteful number, since it uses less digits than its factorization.

1251662610201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33531136.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 1251662610201 in words is "one trillion, two hundred fifty-one billion, six hundred sixty-two million, six hundred ten thousand, two hundred one".