655643142000 has 960 divisors, whose sum is σ = 2882327804928. Its totient is φ = 134933760000.

The previous prime is 655643141983. The next prime is 655643142001. The reversal of 655643142000 is 241346556.

655643142000 is a `hidden beast` number, since 6 + 5 + 5 + 643 + 1 + 4 + 2 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655643142001) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 148299790 + ... + 148304210.

Almost surely, 2^655643142000 is an apocalyptic number.

655643142000 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 655643142000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441163902464).

655643142000 is an abundant number, since it is smaller than the sum of its proper divisors (2226684662928).

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

655643142000 is a wasteful number, since it uses less digits than its factorization.

655643142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4575 (or 4556 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 655643142000 its reverse (241346556), we get a palindrome (655884488556).

The spelling of 655643142000 in words is "six hundred fifty-five billion, six hundred forty-three million, one hundred forty-two thousand".