90206791059 has 64 divisors (see below), whose sum is σ = 159394563072. Its totient is φ = 43932057600.

The previous prime is 90206791043. The next prime is 90206791061. The reversal of 90206791059 is 95019760209.

It is not a de Polignac number, because 90206791059 - 2⁴ = 90206791043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90206790999 and 90206791017.

It is not an unprimeable number, because it can be changed into a prime (90206791009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 964549 + ... + 1053929.

It is an arithmetic number, because the mean of its divisors is an integer number (2490540048).

Almost surely, 2^90206791059 is an apocalyptic number.

90206791059 is a deficient number, since it is larger than the sum of its proper divisors (69187772013).

90206791059 is a wasteful number, since it uses less digits than its factorization.

90206791059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89676.

The product of its (nonzero) digits is 306180, while the sum is 48.

The spelling of 90206791059 in words is "ninety billion, two hundred six million, seven hundred ninety-one thousand, fifty-nine".