15105505651 has 2 divisors, whose sum is σ = 15105505652. Its totient is φ = 15105505650.

The previous prime is 15105505631. The next prime is 15105505697. The reversal of 15105505651 is 15650550151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15105505651 - 2⁷ = 15105505523 is a prime.

It is not a weakly prime, because it can be changed into another prime (15105505631) 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 as a sum of consecutive naturals, namely, 7552752825 + 7552752826.

It is an arithmetic number, because the mean of its divisors is an integer number (7552752826).

Almost surely, 2^15105505651 is an apocalyptic number.

15105505651 is a deficient number, since it is larger than the sum of its proper divisors (1).

15105505651 is an equidigital number, since it uses as much as digits as its factorization.

15105505651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 15105505651 in words is "fifteen billion, one hundred five million, five hundred five thousand, six hundred fifty-one".