655901720600 has 288 divisors, whose sum is σ = 1792999638000. Its totient is φ = 222477373440.

The previous prime is 655901720549. The next prime is 655901720633. The reversal of 655901720600 is 6027109556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 508844756 + ... + 508846044.

Almost surely, 2^655901720600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655901720600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896499819000).

655901720600 is an abundant number, since it is smaller than the sum of its proper divisors (1137097917400).

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

655901720600 is a wasteful number, since it uses less digits than its factorization.

655901720600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 655901720600 in words is "six hundred fifty-five billion, nine hundred one million, seven hundred twenty thousand, six hundred".