15730878623 has 2 divisors, whose sum is σ = 15730878624. Its totient is φ = 15730878622.

The previous prime is 15730878593. The next prime is 15730878649. The reversal of 15730878623 is 32687803751.

It is a happy number.

15730878623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15730878623 - 2²² = 15726684319 is a prime.

It is a super-2 number, since 2×15730878623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15730878673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7865439311 + 7865439312.

It is an arithmetic number, because the mean of its divisors is an integer number (7865439312).

Almost surely, 2^15730878623 is an apocalyptic number.

15730878623 is a deficient number, since it is larger than the sum of its proper divisors (1).

15730878623 is an equidigital number, since it uses as much as digits as its factorization.

15730878623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 15730878623 in words is "fifteen billion, seven hundred thirty million, eight hundred seventy-eight thousand, six hundred twenty-three".