664472506115400 has 96 divisors (see below), whose sum is σ = 2060590845709440. Its totient is φ = 177130210082560.

The previous prime is 664472506115381. The next prime is 664472506115419. The reversal of 664472506115400 is 4511605274466.

It is an interprime number because it is at equal distance from previous prime (664472506115381) and next prime (664472506115419).

It is a super-2 number, since 2×664472506115400² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193478304 + ... + 196882703.

It is an arithmetic number, because the mean of its divisors is an integer number (21464487976140).

Almost surely, 2^{664472506115400} is an apocalyptic number.

664472506115400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664472506115400 is an abundant number, since it is smaller than the sum of its proper divisors (1396118339594040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664472506115400 is a wasteful number, since it uses less digits than its factorization.

664472506115400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390363863 (or 390363854 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 664472506115400 in words is "six hundred sixty-four trillion, four hundred seventy-two billion, five hundred six million, one hundred fifteen thousand, four hundred".