90828426665 has 16 divisors (see below), whose sum is σ = 110651495040. Its totient is φ = 71560083840.

The previous prime is 90828426643. The next prime is 90828426683. The reversal of 90828426665 is 56662482809.

It is not a de Polignac number, because 90828426665 - 2¹² = 90828422569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90828426665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180941 + ... + 463029.

It is an arithmetic number, because the mean of its divisors is an integer number (6915718440).

Almost surely, 2^90828426665 is an apocalyptic number.

It is an amenable number.

90828426665 is a deficient number, since it is larger than the sum of its proper divisors (19823068375).

90828426665 is a wasteful number, since it uses less digits than its factorization.

90828426665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283072.

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 90828426665 in words is "ninety billion, eight hundred twenty-eight million, four hundred twenty-six thousand, six hundred sixty-five".