766752578412091 has 4 divisors (see below), whose sum is σ = 766758721255632. Its totient is φ = 766746435568552.

The previous prime is 766752578412083. The next prime is 766752578412113. The reversal of 766752578412091 is 190214875257667.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 766752578412091 - 2³ = 766752578412083 is a prime.

It is a super-2 number, since 2×766752578412091² (a number of 31 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 766752578412091.

It is not an unprimeable number, because it can be changed into a prime (766752578412391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3071234536 + ... + 3071484181.

It is an arithmetic number, because the mean of its divisors is an integer number (191689680313908).

Almost surely, 2^{766752578412091} is an apocalyptic number.

766752578412091 is a deficient number, since it is larger than the sum of its proper divisors (6142843541).

766752578412091 is a wasteful number, since it uses less digits than its factorization.

766752578412091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6142843540.

The product of its (nonzero) digits is 355622400, while the sum is 70.

The spelling of 766752578412091 in words is "seven hundred sixty-six trillion, seven hundred fifty-two billion, five hundred seventy-eight million, four hundred twelve thousand, ninety-one".