786775343261 has 16 divisors (see below), whose sum is σ = 801682022400. Its totient is φ = 772015587840.

The previous prime is 786775343201. The next prime is 786775343269. The reversal of 786775343261 is 162343577687.

It is a cyclic number.

It is not a de Polignac number, because 786775343261 - 2¹⁸ = 786775081117 is a prime.

It is a super-2 number, since 2×786775343261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 786775343261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786775343269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19061516 + ... + 19102746.

It is an arithmetic number, because the mean of its divisors is an integer number (50105126400).

Almost surely, 2^786775343261 is an apocalyptic number.

It is an amenable number.

786775343261 is a deficient number, since it is larger than the sum of its proper divisors (14906679139).

786775343261 is a wasteful number, since it uses less digits than its factorization.

786775343261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43004.

The product of its digits is 35562240, while the sum is 59.

The spelling of 786775343261 in words is "seven hundred eighty-six billion, seven hundred seventy-five million, three hundred forty-three thousand, two hundred sixty-one".