15493776676 has 81 divisors (see below), whose sum is σ = 33569574129. Its totient is φ = 6237641088.

The previous prime is 15493776619. The next prime is 15493776737. The reversal of 15493776676 is 67667739451.

The square root of 15493776676 is 124474.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12062628900 + 3431147776 = 109830^2 + 58576^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 29624551 + ... + 29625073.

Almost surely, 2^15493776676 is an apocalyptic number.

15493776676 is the 124474-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15493776676

15493776676 is an abundant number, since it is smaller than the sum of its proper divisors (18075797453).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15493776676 is an equidigital number, since it uses as much as digits as its factorization.

15493776676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 549 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 61.

The spelling of 15493776676 in words is "fifteen billion, four hundred ninety-three million, seven hundred seventy-six thousand, six hundred seventy-six".