660493964254 has 4 divisors (see below), whose sum is σ = 990740946384. Its totient is φ = 330246982126.

The previous prime is 660493964201. The next prime is 660493964267. The reversal of 660493964254 is 452469394066.

It is a happy number.

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

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, 165123491062 + ... + 165123491065.

It is an arithmetic number, because the mean of its divisors is an integer number (247685236596).

Almost surely, 2^660493964254 is an apocalyptic number.

660493964254 is a deficient number, since it is larger than the sum of its proper divisors (330246982130).

660493964254 is a wasteful number, since it uses less digits than its factorization.

660493964254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330246982129.

The product of its (nonzero) digits is 33592320, while the sum is 58.

The spelling of 660493964254 in words is "six hundred sixty billion, four hundred ninety-three million, nine hundred sixty-four thousand, two hundred fifty-four".