766742616478 has 8 divisors (see below), whose sum is σ = 1150222324968. Its totient is φ = 383335174824.

The previous prime is 766742616473. The next prime is 766742616487. The reversal of 766742616478 is 874616247667.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766742616473) 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, 18040176 + ... + 18082627.

It is an arithmetic number, because the mean of its divisors is an integer number (143777790621).

Almost surely, 2^766742616478 is an apocalyptic number.

766742616478 is a deficient number, since it is larger than the sum of its proper divisors (383479708490).

766742616478 is a wasteful number, since it uses less digits than its factorization.

766742616478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36133418.

The product of its digits is 113799168, while the sum is 64.

The spelling of 766742616478 in words is "seven hundred sixty-six billion, seven hundred forty-two million, six hundred sixteen thousand, four hundred seventy-eight".