1575421370879 has 4 divisors (see below), whose sum is σ = 1575587862576. Its totient is φ = 1575254879184.

The previous prime is 1575421370867. The next prime is 1575421370881. The reversal of 1575421370879 is 9780731245751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1575421370879 - 2¹⁶ = 1575421305343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1575421370819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83231654 + ... + 83250579.

It is an arithmetic number, because the mean of its divisors is an integer number (393896965644).

Almost surely, 2^{1575421370879} is an apocalyptic number.

1575421370879 is a deficient number, since it is larger than the sum of its proper divisors (166491697).

1575421370879 is an equidigital number, since it uses as much as digits as its factorization.

1575421370879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166491696.

The product of its (nonzero) digits is 14817600, while the sum is 59.

The spelling of 1575421370879 in words is "one trillion, five hundred seventy-five billion, four hundred twenty-one million, three hundred seventy thousand, eight hundred seventy-nine".