15315453556 has 12 divisors (see below), whose sum is σ = 28863739492. Its totient is φ = 7068670848.

The previous prime is 15315453539. The next prime is 15315453563. The reversal of 15315453556 is 65535451351.

It can be written as a sum of positive squares in 2 ways, for example, as 1450391056 + 13865062500 = 38084^2 + 117750^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147263925 + ... + 147264028.

Almost surely, 2^15315453556 is an apocalyptic number.

It is an amenable number.

15315453556 is a deficient number, since it is larger than the sum of its proper divisors (13548285936).

15315453556 is a wasteful number, since it uses less digits than its factorization.

15315453556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294527970 (or 294527968 counting only the distinct ones).

The product of its digits is 675000, while the sum is 43.

The spelling of 15315453556 in words is "fifteen billion, three hundred fifteen million, four hundred fifty-three thousand, five hundred fifty-six".