1662912888879 has 16 divisors (see below), whose sum is σ = 2422376446464. Its totient is φ = 1006328467200.

The previous prime is 1662912888823. The next prime is 1662912888937. The reversal of 1662912888879 is 9788882192661.

It is not a de Polignac number, because 1662912888879 - 2¹⁶ = 1662912823343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1662912888879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662912888079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37415607 + ... + 37460024.

It is an arithmetic number, because the mean of its divisors is an integer number (151398527904).

Almost surely, 2^{1662912888879} is an apocalyptic number.

1662912888879 is a deficient number, since it is larger than the sum of its proper divisors (759463557585).

1662912888879 is a wasteful number, since it uses less digits than its factorization.

1662912888879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74876318.

The product of its digits is 334430208, while the sum is 75.

The spelling of 1662912888879 in words is "one trillion, six hundred sixty-two billion, nine hundred twelve million, eight hundred eighty-eight thousand, eight hundred seventy-nine".