85457002236 has 12 divisors (see below), whose sum is σ = 199399671912. Its totient is φ = 28485667408.

The previous prime is 85457002223. The next prime is 85457002237. The reversal of 85457002236 is 63220075458.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85457002237) 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, 3560708415 + ... + 3560708438.

It is an arithmetic number, because the mean of its divisors is an integer number (16616639326).

Almost surely, 2^85457002236 is an apocalyptic number.

It is an amenable number.

85457002236 is an abundant number, since it is smaller than the sum of its proper divisors (113942669676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85457002236 is a wasteful number, since it uses less digits than its factorization.

85457002236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121416860 (or 7121416858 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 85457002236 in words is "eighty-five billion, four hundred fifty-seven million, two thousand, two hundred thirty-six".