775921793131 has 2 divisors, whose sum is σ = 775921793132. Its totient is φ = 775921793130.

The previous prime is 775921793111. The next prime is 775921793177. The reversal of 775921793131 is 131397129577.

775921793131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 775921793131 - 2⁵ = 775921793099 is a prime.

It is a super-2 number, since 2×775921793131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (775921793111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387960896565 + 387960896566.

It is an arithmetic number, because the mean of its divisors is an integer number (387960896566).

Almost surely, 2^775921793131 is an apocalyptic number.

775921793131 is a deficient number, since it is larger than the sum of its proper divisors (1).

775921793131 is an equidigital number, since it uses as much as digits as its factorization.

775921793131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2500470, while the sum is 55.

The spelling of 775921793131 in words is "seven hundred seventy-five billion, nine hundred twenty-one million, seven hundred ninety-three thousand, one hundred thirty-one".