85712256780 has 192 divisors, whose sum is σ = 252728985600. Its totient is φ = 21663037440.

The previous prime is 85712256677. The next prime is 85712256781. The reversal of 85712256780 is 8765221758.

It is not an unprimeable number, because it can be changed into a prime (85712256781) 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, 102159601 + ... + 102160439.

It is an arithmetic number, because the mean of its divisors is an integer number (1316296800).

Almost surely, 2^85712256780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85712256780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126364492800).

85712256780 is an abundant number, since it is smaller than the sum of its proper divisors (167016728820).

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

85712256780 is a wasteful number, since it uses less digits than its factorization.

85712256780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1462 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 85712256780 in words is "eighty-five billion, seven hundred twelve million, two hundred fifty-six thousand, seven hundred eighty".