90885618002 has 4 divisors (see below), whose sum is σ = 136328427006. Its totient is φ = 45442809000.

The previous prime is 90885617969. The next prime is 90885618029. The reversal of 90885618002 is 20081658809.

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

It can be written as a sum of positive squares in only one way, i.e., 54182338441 + 36703279561 = 232771^2 + 191581^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22721404499 + ... + 22721404502.

Almost surely, 2^90885618002 is an apocalyptic number.

90885618002 is a deficient number, since it is larger than the sum of its proper divisors (45442809004).

90885618002 is a wasteful number, since it uses less digits than its factorization.

90885618002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45442809003.

The product of its (nonzero) digits is 276480, while the sum is 47.

The spelling of 90885618002 in words is "ninety billion, eight hundred eighty-five million, six hundred eighteen thousand, two".