1662528912879 has 8 divisors (see below), whose sum is σ = 2232652737280. Its totient is φ = 1100378848536.

The previous prime is 1662528912761. The next prime is 1662528912893. The reversal of 1662528912879 is 9782198252661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1662528912879 - 2⁹ = 1662528912367 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 (1662528982879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993439527 + ... + 1993440360.

It is an arithmetic number, because the mean of its divisors is an integer number (279081592160).

Almost surely, 2^{1662528912879} is an apocalyptic number.

1662528912879 is a deficient number, since it is larger than the sum of its proper divisors (570123824401).

1662528912879 is a wasteful number, since it uses less digits than its factorization.

1662528912879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986880029.

The product of its digits is 52254720, while the sum is 66.

The spelling of 1662528912879 in words is "one trillion, six hundred sixty-two billion, five hundred twenty-eight million, nine hundred twelve thousand, eight hundred seventy-nine".