85909755736 has 64 divisors (see below), whose sum is σ = 188906618880. Its totient is φ = 35858699520.

The previous prime is 85909755677. The next prime is 85909755749. The reversal of 85909755736 is 63755790958.

It is a super-2 number, since 2×85909755736² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1315881 + ... + 1379623.

It is an arithmetic number, because the mean of its divisors is an integer number (2951665920).

Almost surely, 2^85909755736 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 85909755736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94453309440).

85909755736 is an abundant number, since it is smaller than the sum of its proper divisors (102996863144).

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

85909755736 is a wasteful number, since it uses less digits than its factorization.

85909755736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64384 (or 64380 counting only the distinct ones).

The product of its (nonzero) digits is 71442000, while the sum is 64.

The spelling of 85909755736 in words is "eighty-five billion, nine hundred nine million, seven hundred fifty-five thousand, seven hundred thirty-six".