89319856431945 has 16 divisors (see below), whose sum is σ = 144385087512960. Its totient is φ = 47146151023104.

The previous prime is 89319856431941. The next prime is 89319856431989. The reversal of 89319856431945 is 54913465891398.

It is not a de Polignac number, because 89319856431945 - 2² = 89319856431941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89319856431941) 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, 30694107285 + ... + 30694110194.

It is an arithmetic number, because the mean of its divisors is an integer number (9024067969560).

Almost surely, 2^{89319856431945} is an apocalyptic number.

It is an amenable number.

89319856431945 is a deficient number, since it is larger than the sum of its proper divisors (55065231081015).

89319856431945 is a wasteful number, since it uses less digits than its factorization.

89319856431945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61388217584.

The product of its digits is 1007769600, while the sum is 75.

The spelling of 89319856431945 in words is "eighty-nine trillion, three hundred nineteen billion, eight hundred fifty-six million, four hundred thirty-one thousand, nine hundred forty-five".