766721542242 has 8 divisors (see below), whose sum is σ = 1533443084496. Its totient is φ = 255573847412.

The previous prime is 766721542219. The next prime is 766721542253. The reversal of 766721542242 is 242245127667.

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

766721542242 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 766721542191 and 766721542200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63893461848 + ... + 63893461859.

It is an arithmetic number, because the mean of its divisors is an integer number (191680385562).

Almost surely, 2^766721542242 is an apocalyptic number.

766721542242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766721542242 is a wasteful number, since it uses less digits than its factorization.

766721542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127786923712.

The product of its digits is 2257920, while the sum is 48.

The spelling of 766721542242 in words is "seven hundred sixty-six billion, seven hundred twenty-one million, five hundred forty-two thousand, two hundred forty-two".