766777046213 has 4 divisors (see below), whose sum is σ = 766779220620. Its totient is φ = 766774871808.

The previous prime is 766777046183. The next prime is 766777046221. The reversal of 766777046213 is 312640777667.

766777046213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 227430748609 + 539346297604 = 476897^2 + 734402^2 .

It is a cyclic number.

It is not a de Polignac number, because 766777046213 - 2⁶ = 766777046149 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 (766777046263) 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, 422978 + ... + 1308611.

It is an arithmetic number, because the mean of its divisors is an integer number (191694805155).

Almost surely, 2^766777046213 is an apocalyptic number.

It is an amenable number.

766777046213 is a deficient number, since it is larger than the sum of its proper divisors (2174407).

766777046213 is a wasteful number, since it uses less digits than its factorization.

766777046213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174406.

The product of its (nonzero) digits is 12446784, while the sum is 56.

The spelling of 766777046213 in words is "seven hundred sixty-six billion, seven hundred seventy-seven million, forty-six thousand, two hundred thirteen".