90520020829 has 16 divisors (see below), whose sum is σ = 105029052928. Its totient is φ = 76406129712.

The previous prime is 90520020797. The next prime is 90520020839. The reversal of 90520020829 is 92802002509.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90520020829 - 2⁵ = 90520020797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90520020839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1521802 + ... + 1580164.

It is an arithmetic number, because the mean of its divisors is an integer number (6564315808).

Almost surely, 2^90520020829 is an apocalyptic number.

It is an amenable number.

90520020829 is a deficient number, since it is larger than the sum of its proper divisors (14509032099).

90520020829 is a wasteful number, since it uses less digits than its factorization.

90520020829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61744.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 90520020829 in words is "ninety billion, five hundred twenty million, twenty thousand, eight hundred twenty-nine".