10251661187 has 2 divisors, whose sum is σ = 10251661188. Its totient is φ = 10251661186.

The previous prime is 10251661169. The next prime is 10251661237. The reversal of 10251661187 is 78116615201.

It is a weak prime.

It is an emirp because it is prime and its reverse (78116615201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10251661187 - 2²⁰ = 10250612611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10251661187.

It is not a weakly prime, because it can be changed into another prime (10251667187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5125830593 + 5125830594.

It is an arithmetic number, because the mean of its divisors is an integer number (5125830594).

Almost surely, 2^10251661187 is an apocalyptic number.

10251661187 is a deficient number, since it is larger than the sum of its proper divisors (1).

10251661187 is an equidigital number, since it uses as much as digits as its factorization.

10251661187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 10251661187 in words is "ten billion, two hundred fifty-one million, six hundred sixty-one thousand, one hundred eighty-seven".