89932812545 has 4 divisors (see below), whose sum is σ = 107919375060. Its totient is φ = 71946250032.

The previous prime is 89932812533. The next prime is 89932812589. The reversal of 89932812545 is 54521823998.

It is a Cunningham number, because it is equal to 299888²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54521823998 = 2 ⋅27260911999.

It can be written as a sum of positive squares in 2 ways, for example, as 32375524624 + 57557287921 = 179932^2 + 239911^2 .

It is a cyclic number.

It is not a de Polignac number, because 89932812545 - 2⁶ = 89932812481 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8993281250 + ... + 8993281259.

It is an arithmetic number, because the mean of its divisors is an integer number (26979843765).

Almost surely, 2^89932812545 is an apocalyptic number.

It is an amenable number.

89932812545 is a deficient number, since it is larger than the sum of its proper divisors (17986562515).

89932812545 is a wasteful number, since it uses less digits than its factorization.

89932812545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17986562514.

The product of its digits is 6220800, while the sum is 56.

The spelling of 89932812545 in words is "eighty-nine billion, nine hundred thirty-two million, eight hundred twelve thousand, five hundred forty-five".