15420523460456 has 16 divisors (see below), whose sum is σ = 29020966553700. Its totient is φ = 7681599046144.

The previous prime is 15420523460449. The next prime is 15420523460501. The reversal of 15420523460456 is 65406432502451.

It can be written as a sum of positive squares in 2 ways, for example, as 15228460397956 + 192063062500 = 3902366^2 + 438250^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15420523460456.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3582833225 + ... + 3582837528.

Almost surely, 2^{15420523460456} is an apocalyptic number.

It is an amenable number.

15420523460456 is a deficient number, since it is larger than the sum of its proper divisors (13600443093244).

15420523460456 is a wasteful number, since it uses less digits than its factorization.

15420523460456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165671028 (or 7165671024 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 15420523460456 in words is "fifteen trillion, four hundred twenty billion, five hundred twenty-three million, four hundred sixty thousand, four hundred fifty-six".