90720893073 has 32 divisors (see below), whose sum is σ = 127381681152. Its totient is φ = 57358929600.

The previous prime is 90720893033. The next prime is 90720893089. The reversal of 90720893073 is 37039802709.

It is not a de Polignac number, because 90720893073 - 2¹⁶ = 90720827537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90720893033) 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 31 ways as a sum of consecutive naturals, for example, 2324188 + ... + 2362898.

It is an arithmetic number, because the mean of its divisors is an integer number (3980677536).

Almost surely, 2^90720893073 is an apocalyptic number.

It is an amenable number.

90720893073 is a deficient number, since it is larger than the sum of its proper divisors (36660788079).

90720893073 is a wasteful number, since it uses less digits than its factorization.

90720893073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39285.

The product of its (nonzero) digits is 571536, while the sum is 48.

The spelling of 90720893073 in words is "ninety billion, seven hundred twenty million, eight hundred ninety-three thousand, seventy-three".