668281153478 has 8 divisors (see below), whose sum is σ = 1002711709272. Its totient is φ = 334043917056.

The previous prime is 668281153447. The next prime is 668281153483. The reversal of 668281153478 is 874351182866.

668281153478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 48321200 + ... + 48335027.

It is an arithmetic number, because the mean of its divisors is an integer number (125338963659).

Almost surely, 2^668281153478 is an apocalyptic number.

668281153478 is a deficient number, since it is larger than the sum of its proper divisors (334430555794).

668281153478 is a wasteful number, since it uses less digits than its factorization.

668281153478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96659686.

The product of its digits is 15482880, while the sum is 59.

The spelling of 668281153478 in words is "six hundred sixty-eight billion, two hundred eighty-one million, one hundred fifty-three thousand, four hundred seventy-eight".