668366761334 has 4 divisors (see below), whose sum is σ = 1002550142004. Its totient is φ = 334183380666.

The previous prime is 668366761327. The next prime is 668366761423. The reversal of 668366761334 is 433167663866.

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

It is a super-2 number, since 2×668366761334² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167091690332 + ... + 167091690335.

It is an arithmetic number, because the mean of its divisors is an integer number (250637535501).

Almost surely, 2^668366761334 is an apocalyptic number.

668366761334 is a deficient number, since it is larger than the sum of its proper divisors (334183380670).

668366761334 is a wasteful number, since it uses less digits than its factorization.

668366761334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334183380669.

The product of its digits is 47029248, while the sum is 59.

The spelling of 668366761334 in words is "six hundred sixty-eight billion, three hundred sixty-six million, seven hundred sixty-one thousand, three hundred thirty-four".