1143640221600 has 144 divisors (see below), whose sum is σ = 3723048584640. Its totient is φ = 304929792000.

The previous prime is 1143640221599. The next prime is 1143640221629. The reversal of 1143640221600 is 61220463411.

It is a super-2 number, since 2×1143640221600² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20633925 + ... + 20689275.

It is an arithmetic number, because the mean of its divisors is an integer number (25854504060).

Almost surely, 2^{1143640221600} is an apocalyptic number.

1143640221600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143640221600 is an abundant number, since it is smaller than the sum of its proper divisors (2579408363040).

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

1143640221600 is a wasteful number, since it uses less digits than its factorization.

1143640221600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63983 (or 63970 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 1143640221600 in words is "one trillion, one hundred forty-three billion, six hundred forty million, two hundred twenty-one thousand, six hundred".