85283638557 has 64 divisors (see below), whose sum is σ = 131649235200. Its totient is φ = 48643559424.

The previous prime is 85283638553. The next prime is 85283638571. The reversal of 85283638557 is 75583638258.

It is not a de Polignac number, because 85283638557 - 2² = 85283638553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85283638557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85283638553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12269319 + ... + 12276267.

It is an arithmetic number, because the mean of its divisors is an integer number (2057019300).

Almost surely, 2^85283638557 is an apocalyptic number.

It is an amenable number.

85283638557 is a deficient number, since it is larger than the sum of its proper divisors (46365596643).

85283638557 is a wasteful number, since it uses less digits than its factorization.

85283638557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its digits is 48384000, while the sum is 60.

The spelling of 85283638557 in words is "eighty-five billion, two hundred eighty-three million, six hundred thirty-eight thousand, five hundred fifty-seven".