861713057650 has 48 divisors (see below), whose sum is σ = 1680062031648. Its totient is φ = 328457808000.

The previous prime is 861713057633. The next prime is 861713057657. The reversal of 861713057650 is 56750317168.

It is a junction number, because it is equal to n+sod(n) for n = 861713057594 and 861713057603.

It is not an unprimeable number, because it can be changed into a prime (861713057657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4799616 + ... + 4975915.

It is an arithmetic number, because the mean of its divisors is an integer number (35001292326).

Almost surely, 2^861713057650 is an apocalyptic number.

861713057650 is a deficient number, since it is larger than the sum of its proper divisors (818348973998).

861713057650 is a wasteful number, since it uses less digits than its factorization.

861713057650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9775627 (or 9775622 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 861713057650 in words is "eight hundred sixty-one billion, seven hundred thirteen million, fifty-seven thousand, six hundred fifty".