785610551606161 has 4 divisors (see below), whose sum is σ = 785612177122032. Its totient is φ = 785608926090292.

The previous prime is 785610551606093. The next prime is 785610551606219. The reversal of 785610551606161 is 161606155016587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 785610551606161 - 2⁷ = 785610551606033 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 785610551606096 and 785610551606105.

It is not an unprimeable number, because it can be changed into a prime (785610554606161) 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, 812032771 + ... + 812999656.

It is an arithmetic number, because the mean of its divisors is an integer number (196403044280508).

Almost surely, 2^{785610551606161} is an apocalyptic number.

It is an amenable number.

785610551606161 is a deficient number, since it is larger than the sum of its proper divisors (1625515871).

785610551606161 is a wasteful number, since it uses less digits than its factorization.

785610551606161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625515870.

The product of its (nonzero) digits is 9072000, while the sum is 58.

The spelling of 785610551606161 in words is "seven hundred eighty-five trillion, six hundred ten billion, five hundred fifty-one million, six hundred six thousand, one hundred sixty-one".