10251657216251 has 4 divisors (see below), whose sum is σ = 11183626054104. Its totient is φ = 9319688378400.

The previous prime is 10251657216233. The next prime is 10251657216293. The reversal of 10251657216251 is 15261275615201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10251657216251 - 2¹⁸ = 10251656954107 is a prime.

It is a super-2 number, since 2×10251657216251² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10251657216211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465984418910 + ... + 465984418931.

It is an arithmetic number, because the mean of its divisors is an integer number (2795906513526).

Almost surely, 2^{10251657216251} is an apocalyptic number.

10251657216251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10251657216251 is a deficient number, since it is larger than the sum of its proper divisors (931968837853).

10251657216251 is an equidigital number, since it uses as much as digits as its factorization.

10251657216251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931968837852.

The product of its (nonzero) digits is 252000, while the sum is 44.

The spelling of 10251657216251 in words is "ten trillion, two hundred fifty-one billion, six hundred fifty-seven million, two hundred sixteen thousand, two hundred fifty-one".