8019621324544 has 36 divisors (see below), whose sum is σ = 16038641636640. Its totient is φ = 4002114222080.

The previous prime is 8019621324503. The next prime is 8019621324563. The reversal of 8019621324544 is 4454231269108.

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, 29930584 + ... + 30197335.

It is an arithmetic number, because the mean of its divisors is an integer number (445517823240).

Almost surely, 2^{8019621324544} is an apocalyptic number.

It is an amenable number.

8019621324544 is a deficient number, since it is larger than the sum of its proper divisors (8019020312096).

8019621324544 is an equidigital number, since it uses as much as digits as its factorization.

8019621324544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60128456 (or 60128442 counting only the distinct ones).

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

The spelling of 8019621324544 in words is "eight trillion, nineteen billion, six hundred twenty-one million, three hundred twenty-four thousand, five hundred forty-four".