673136066400 has 288 divisors, whose sum is σ = 2651365301760. Its totient is φ = 144809041920.

The previous prime is 673136066299. The next prime is 673136066441. The reversal of 673136066400 is 4660631376.

It is a super-2 number, since 2×673136066400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 892860 + ... + 1464059.

It is an arithmetic number, because the mean of its divisors is an integer number (9206129520).

Almost surely, 2^673136066400 is an apocalyptic number.

673136066400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

673136066400 is an abundant number, since it is smaller than the sum of its proper divisors (1978229235360).

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

673136066400 is a wasteful number, since it uses less digits than its factorization.

673136066400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356966 (or 2356953 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 42.

Adding to 673136066400 its reverse (4660631376), we get a palindrome (677796697776).

The spelling of 673136066400 in words is "six hundred seventy-three billion, one hundred thirty-six million, sixty-six thousand, four hundred".