15642422507 has 2 divisors, whose sum is σ = 15642422508. Its totient is φ = 15642422506.

The previous prime is 15642422479. The next prime is 15642422519. The reversal of 15642422507 is 70522424651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15642422507 - 2¹⁴ = 15642406123 is a prime.

It is not a weakly prime, because it can be changed into another prime (15642422557) 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, 7821211253 + 7821211254.

It is an arithmetic number, because the mean of its divisors is an integer number (7821211254).

Almost surely, 2^15642422507 is an apocalyptic number.

15642422507 is a deficient number, since it is larger than the sum of its proper divisors (1).

15642422507 is an equidigital number, since it uses as much as digits as its factorization.

15642422507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 15642422507 in words is "fifteen billion, six hundred forty-two million, four hundred twenty-two thousand, five hundred seven".