664124263402 has 8 divisors (see below), whose sum is σ = 1039498847136. Its totient is φ = 317624647692.

The previous prime is 664124263399. The next prime is 664124263417. The reversal of 664124263402 is 204362421466.

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

It is a super-2 number, since 2×664124263402² (a number of 24 digits) contains 22 as substring.

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, 7218741948 + ... + 7218742039.

It is an arithmetic number, because the mean of its divisors is an integer number (129937355892).

Almost surely, 2^664124263402 is an apocalyptic number.

664124263402 is a deficient number, since it is larger than the sum of its proper divisors (375374583734).

664124263402 is a wasteful number, since it uses less digits than its factorization.

664124263402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14437484012.

The product of its (nonzero) digits is 331776, while the sum is 40.

Adding to 664124263402 its reverse (204362421466), we get a palindrome (868486684868).

The spelling of 664124263402 in words is "six hundred sixty-four billion, one hundred twenty-four million, two hundred sixty-three thousand, four hundred two".