90780928903 has 16 divisors (see below), whose sum is σ = 106655572800. Its totient is φ = 75636792576.

The previous prime is 90780928867. The next prime is 90780928919. The reversal of 90780928903 is 30982908709.

It is a cyclic number.

It is not a de Polignac number, because 90780928903 - 2²⁹ = 90244057991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90780928933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104625 + ... + 438757.

It is an arithmetic number, because the mean of its divisors is an integer number (6665973300).

Almost surely, 2^90780928903 is an apocalyptic number.

90780928903 is a deficient number, since it is larger than the sum of its proper divisors (15874643897).

90780928903 is a wasteful number, since it uses less digits than its factorization.

90780928903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335226.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 90780928903 in words is "ninety billion, seven hundred eighty million, nine hundred twenty-eight thousand, nine hundred three".