77585158860 has 288 divisors, whose sum is σ = 252249102336. Its totient is φ = 17776281600.

The previous prime is 77585158837. The next prime is 77585158877. The reversal of 77585158860 is 6885158577.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 77585158794 and 77585158803.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9673572 + ... + 9681588.

Almost surely, 2^77585158860 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 77585158860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126124551168).

77585158860 is an abundant number, since it is smaller than the sum of its proper divisors (174663943476).

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

77585158860 is a wasteful number, since it uses less digits than its factorization.

77585158860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8125 (or 8112 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 60.

The spelling of 77585158860 in words is "seventy-seven billion, five hundred eighty-five million, one hundred fifty-eight thousand, eight hundred sixty".