785520851956 has 12 divisors (see below), whose sum is σ = 1375506407968. Its totient is φ = 392519021112.

The previous prime is 785520851939. The next prime is 785520851959. The reversal of 785520851956 is 659158025587.

It is a junction number, because it is equal to n+sod(n) for n = 785520851894 and 785520851903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785520851959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60343896 + ... + 60356911.

Almost surely, 2^785520851956 is an apocalyptic number.

It is an amenable number.

785520851956 is a deficient number, since it is larger than the sum of its proper divisors (589985556012).

785520851956 is a wasteful number, since it uses less digits than its factorization.

785520851956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120702438 (or 120702436 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 61.

The spelling of 785520851956 in words is "seven hundred eighty-five billion, five hundred twenty million, eight hundred fifty-one thousand, nine hundred fifty-six".