89835392557 has 4 divisors (see below), whose sum is σ = 91746783936. Its totient is φ = 87924001180.

The previous prime is 89835392551. The next prime is 89835392561. The reversal of 89835392557 is 75529353898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75529353898 = 2 ⋅37764676949.

It is a cyclic number.

It is not a de Polignac number, because 89835392557 - 2¹¹ = 89835390509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89835392551) 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, 955695619 + ... + 955695712.

It is an arithmetic number, because the mean of its divisors is an integer number (22936695984).

Almost surely, 2^89835392557 is an apocalyptic number.

It is an amenable number.

89835392557 is a deficient number, since it is larger than the sum of its proper divisors (1911391379).

89835392557 is a wasteful number, since it uses less digits than its factorization.

89835392557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911391378.

The product of its digits is 81648000, while the sum is 64.

The spelling of 89835392557 in words is "eighty-nine billion, eight hundred thirty-five million, three hundred ninety-two thousand, five hundred fifty-seven".