786813775061 has 4 divisors (see below), whose sum is σ = 828225026400. Its totient is φ = 745402523724.

The previous prime is 786813775057. The next prime is 786813775073. The reversal of 786813775061 is 160577318687.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 160577318687 = 1151 ⋅139511137.

It is a cyclic number.

It is not a de Polignac number, because 786813775061 - 2² = 786813775057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786813775091) 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, 20705625641 + ... + 20705625678.

It is an arithmetic number, because the mean of its divisors is an integer number (207056256600).

Almost surely, 2^786813775061 is an apocalyptic number.

It is an amenable number.

786813775061 is a deficient number, since it is larger than the sum of its proper divisors (41411251339).

786813775061 is a wasteful number, since it uses less digits than its factorization.

786813775061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41411251338.

The product of its (nonzero) digits is 11854080, while the sum is 59.

The spelling of 786813775061 in words is "seven hundred eighty-six billion, eight hundred thirteen million, seven hundred seventy-five thousand, sixty-one".