90436718049 has 16 divisors (see below), whose sum is σ = 121711867200. Its totient is φ = 59726569536.

The previous prime is 90436718041. The next prime is 90436718059. The reversal of 90436718049 is 94081763409.

It is not a de Polignac number, because 90436718049 - 2³ = 90436718041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90436717992 and 90436718010.

It is not an unprimeable number, because it can be changed into a prime (90436718041) 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, 1895602 + ... + 1942724.

It is an arithmetic number, because the mean of its divisors is an integer number (7606991700).

Almost surely, 2^90436718049 is an apocalyptic number.

It is an amenable number.

90436718049 is a deficient number, since it is larger than the sum of its proper divisors (31275149151).

90436718049 is a wasteful number, since it uses less digits than its factorization.

90436718049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53104.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 90436718049 in words is "ninety billion, four hundred thirty-six million, seven hundred eighteen thousand, forty-nine".