15613551423 has 12 divisors (see below), whose sum is σ = 22569351480. Its totient is φ = 10401444816.

The previous prime is 15613551379. The next prime is 15613551467. The reversal of 15613551423 is 32415531651.

15613551423 is a `hidden beast` number, since 1 + 5 + 6 + 135 + 514 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (15613551379) and next prime (15613551467).

It is not a de Polignac number, because 15613551423 - 2⁸ = 15613551167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15613551493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619413 + ... + 644126.

It is an arithmetic number, because the mean of its divisors is an integer number (1880779290).

Almost surely, 2^15613551423 is an apocalyptic number.

15613551423 is a deficient number, since it is larger than the sum of its proper divisors (6955800057).

15613551423 is a wasteful number, since it uses less digits than its factorization.

15613551423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264918 (or 1264915 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 15613551423 in words is "fifteen billion, six hundred thirteen million, five hundred fifty-one thousand, four hundred twenty-three".