15019438242064 has 45 divisors (see below), whose sum is σ = 29179821458487. Its totient is φ = 7489217768352.

The previous prime is 15019438241939. The next prime is 15019438242139. The reversal of 15019438242064 is 46024283491051.

The square root of 15019438242064 is 3875492.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15019438241999 and 15019438242017.

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 8 ways as a sum of consecutive naturals, for example, 6805362849 + ... + 6805365055.

Almost surely, 2^{15019438242064} is an apocalyptic number.

15019438242064 is the 3875492-nd square number.

It is an amenable number.

15019438242064 is a deficient number, since it is larger than the sum of its proper divisors (14160383216423).

15019438242064 is an frugal number, since it uses more digits than its factorization.

15019438242064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5300 (or 2648 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

Multiplying 15019438242064 by its sum of digits (49), we get a square (735952473861136 = 27128444²).

The spelling of 15019438242064 in words is "fifteen trillion, nineteen billion, four hundred thirty-eight million, two hundred forty-two thousand, sixty-four".