10251516491 has 2 divisors, whose sum is σ = 10251516492. Its totient is φ = 10251516490.

The previous prime is 10251516487. The next prime is 10251516593. The reversal of 10251516491 is 19461515201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10251516491 - 2² = 10251516487 is a prime.

It is not a weakly prime, because it can be changed into another prime (10251516391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5125758245 + 5125758246.

It is an arithmetic number, because the mean of its divisors is an integer number (5125758246).

Almost surely, 2^10251516491 is an apocalyptic number.

10251516491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10251516491 is an equidigital number, since it uses as much as digits as its factorization.

10251516491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 10251516491 in words is "ten billion, two hundred fifty-one million, five hundred sixteen thousand, four hundred ninety-one".