90754816169 has 4 divisors (see below), whose sum is σ = 90756356100. Its totient is φ = 90753276240.

The previous prime is 90754816147. The next prime is 90754816181. The reversal of 90754816169 is 96161845709.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7688659225 + 83066156944 = 87685^2 + 288212^2 .

It is a cyclic number.

It is not a de Polignac number, because 90754816169 - 2⁸ = 90754815913 is a prime.

It is a super-2 number, since 2×90754816169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90754816199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677894 + ... + 800655.

It is an arithmetic number, because the mean of its divisors is an integer number (22689089025).

Almost surely, 2^90754816169 is an apocalyptic number.

It is an amenable number.

90754816169 is a deficient number, since it is larger than the sum of its proper divisors (1539931).

90754816169 is a wasteful number, since it uses less digits than its factorization.

90754816169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539930.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 90754816169 in words is "ninety billion, seven hundred fifty-four million, eight hundred sixteen thousand, one hundred sixty-nine".