90129798735 has 16 divisors (see below), whose sum is σ = 146238773760. Its totient is φ = 47392194080.

The previous prime is 90129798659. The next prime is 90129798767. The reversal of 90129798735 is 53789792109.

It is not a de Polignac number, because 90129798735 - 2⁷ = 90129798607 is a prime.

It is a congruent number.

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, 42313395 + ... + 42315524.

It is an arithmetic number, because the mean of its divisors is an integer number (9139923360).

Almost surely, 2^90129798735 is an apocalyptic number.

90129798735 is a deficient number, since it is larger than the sum of its proper divisors (56108975025).

90129798735 is a wasteful number, since it uses less digits than its factorization.

90129798735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84628998.

The product of its (nonzero) digits is 8573040, while the sum is 60.

The spelling of 90129798735 in words is "ninety billion, one hundred twenty-nine million, seven hundred ninety-eight thousand, seven hundred thirty-five".