655849622400 has 768 divisors, whose sum is σ = 2538763223040. Its totient is φ = 145696481280.

The previous prime is 655849622399. The next prime is 655849622413. The reversal of 655849622400 is 4226948556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 759964369 + ... + 759965231.

It is an arithmetic number, because the mean of its divisors is an integer number (3305681280).

Almost surely, 2^655849622400 is an apocalyptic number.

655849622400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655849622400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269381611520).

655849622400 is an abundant number, since it is smaller than the sum of its proper divisors (1882913600640).

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

655849622400 is a wasteful number, since it uses less digits than its factorization.

655849622400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 655849622400 in words is "six hundred fifty-five billion, eight hundred forty-nine million, six hundred twenty-two thousand, four hundred".