90709161489 has 12 divisors (see below), whose sum is σ = 133496502516. Its totient is φ = 59331778272.

The previous prime is 90709161479. The next prime is 90709161553. The reversal of 90709161489 is 98416190709.

90709161489 is a `hidden beast` number, since 9 + 0 + 70 + 91 + 6 + 1 + 489 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60051953025 + 30657208464 = 245055^2 + 175092^2 .

It is not a de Polignac number, because 90709161489 - 2³³ = 82119226897 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (90709161479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95082502 + ... + 95083455.

It is an arithmetic number, because the mean of its divisors is an integer number (11124708543).

Almost surely, 2^90709161489 is an apocalyptic number.

It is an amenable number.

90709161489 is a deficient number, since it is larger than the sum of its proper divisors (42787341027).

90709161489 is a wasteful number, since it uses less digits than its factorization.

90709161489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190166016 (or 190166013 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 90709161489 in words is "ninety billion, seven hundred nine million, one hundred sixty-one thousand, four hundred eighty-nine".