1502112166561 has 4 divisors (see below), whose sum is σ = 1502354488000. Its totient is φ = 1501869845124.

The previous prime is 1502112166547. The next prime is 1502112166609. The reversal of 1502112166561 is 1656612112051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1502112166561 - 2⁷ = 1502112166433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1502112166561.

It is not an unprimeable number, because it can be changed into a prime (1502112160561) by changing a digit.

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, 121151421 + ... + 121163818.

It is an arithmetic number, because the mean of its divisors is an integer number (375588622000).

Almost surely, 2^{1502112166561} is an apocalyptic number.

It is an amenable number.

1502112166561 is a deficient number, since it is larger than the sum of its proper divisors (242321439).

1502112166561 is an equidigital number, since it uses as much as digits as its factorization.

1502112166561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242321438.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 1502112166561 in words is "one trillion, five hundred two billion, one hundred twelve million, one hundred sixty-six thousand, five hundred sixty-one".