10191012651 has 20 divisors (see below), whose sum is σ = 15226633224. Its totient is φ = 6792660000.

The previous prime is 10191012613. The next prime is 10191012673. The reversal of 10191012651 is 15621019101.

10191012651 is a `hidden beast` number, since 1 + 0 + 1 + 9 + 1 + 0 + 1 + 2 + 651 = 666.

It is not a de Polignac number, because 10191012651 - 2¹⁴ = 10190996267 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10191012451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 558096 + ... + 576066.

Almost surely, 2^10191012651 is an apocalyptic number.

10191012651 is a deficient number, since it is larger than the sum of its proper divisors (5035620573).

10191012651 is an equidigital number, since it uses as much as digits as its factorization.

10191012651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24984 (or 24975 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 27.

The spelling of 10191012651 in words is "ten billion, one hundred ninety-one million, twelve thousand, six hundred fifty-one".