766663352642 has 128 divisors (see below), whose sum is σ = 1332620771328. Its totient is φ = 327667737600.

The previous prime is 766663352639. The next prime is 766663352677. The reversal of 766663352642 is 246253366667.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1184950763 + ... + 1184951409.

It is an arithmetic number, because the mean of its divisors is an integer number (10411099776).

Almost surely, 2^766663352642 is an apocalyptic number.

766663352642 is a deficient number, since it is larger than the sum of its proper divisors (565957418686).

766663352642 is a wasteful number, since it uses less digits than its factorization.

766663352642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 39191040, while the sum is 56.

The spelling of 766663352642 in words is "seven hundred sixty-six billion, six hundred sixty-three million, three hundred fifty-two thousand, six hundred forty-two".