722195816400 has 120 divisors (see below), whose sum is σ = 2570482184960. Its totient is φ = 192585548160.

The previous prime is 722195816357. The next prime is 722195816411. The reversal of 722195816400 is 4618591227.

722195816400 is a `hidden beast` number, since 7 + 2 + 2 + 1 + 9 + 581 + 64 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 33424192 + ... + 33445791.

Almost surely, 2^722195816400 is an apocalyptic number.

It is an amenable number.

722195816400 is an abundant number, since it is smaller than the sum of its proper divisors (1848286368560).

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

722195816400 is a wasteful number, since it uses less digits than its factorization.

722195816400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66870010 (or 66869993 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 722195816400 in words is "seven hundred twenty-two billion, one hundred ninety-five million, eight hundred sixteen thousand, four hundred".