85233385557 has 12 divisors (see below), whose sum is σ = 123930222624. Its totient is φ = 56445949800.

The previous prime is 85233385553. The next prime is 85233385577. The reversal of 85233385557 is 75558333258.

85233385557 is a `hidden beast` number, since 8 + 5 + 2 + 3 + 3 + 3 + 85 + 557 = 666.

It is not a de Polignac number, because 85233385557 - 2² = 85233385553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85233385553) 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, 31357503 + ... + 31360220.

It is an arithmetic number, because the mean of its divisors is an integer number (10327518552).

Almost surely, 2^85233385557 is an apocalyptic number.

It is an amenable number.

85233385557 is a deficient number, since it is larger than the sum of its proper divisors (38696837067).

85233385557 is a wasteful number, since it uses less digits than its factorization.

85233385557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62717880 (or 62717877 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 85233385557 in words is "eighty-five billion, two hundred thirty-three million, three hundred eighty-five thousand, five hundred fifty-seven".