786872236121 has 32 divisors (see below), whose sum is σ = 819699471360. Its totient is φ = 755017099200.

The previous prime is 786872236097. The next prime is 786872236151. The reversal of 786872236121 is 121632278687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-786872236121 is a prime.

It is a Smith number, since the sum of its digits (53) 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 not an unprimeable number, because it can be changed into a prime (786872236151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107301971 + ... + 107309303.

It is an arithmetic number, because the mean of its divisors is an integer number (25615608480).

Almost surely, 2^786872236121 is an apocalyptic number.

786872236121 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

786872236121 is a deficient number, since it is larger than the sum of its proper divisors (32827235239).

786872236121 is a wasteful number, since it uses less digits than its factorization.

786872236121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7757.

The product of its digits is 2709504, while the sum is 53.

The spelling of 786872236121 in words is "seven hundred eighty-six billion, eight hundred seventy-two million, two hundred thirty-six thousand, one hundred twenty-one".