90259402868 has 6 divisors (see below), whose sum is σ = 157953955026. Its totient is φ = 45129701432.

The previous prime is 90259402841. The next prime is 90259402913. The reversal of 90259402868 is 86820495209.

It can be written as a sum of positive squares in only one way, i.e., 89878840804 + 380562064 = 299798^2 + 19508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11282425355 + ... + 11282425362.

It is an arithmetic number, because the mean of its divisors is an integer number (26325659171).

Almost surely, 2^90259402868 is an apocalyptic number.

It is an amenable number.

90259402868 is a deficient number, since it is larger than the sum of its proper divisors (67694552158).

90259402868 is a wasteful number, since it uses less digits than its factorization.

90259402868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22564850721 (or 22564850719 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 90259402868 in words is "ninety billion, two hundred fifty-nine million, four hundred two thousand, eight hundred sixty-eight".