2243621506320 has 120 divisors (see below), whose sum is σ = 7609431404952. Its totient is φ = 592375296000.

The previous prime is 2243621506309. The next prime is 2243621506327. The reversal of 2243621506320 is 236051263422.

2243621506320 is a `hidden beast` number, since 2 + 2 + 4 + 3 + 6 + 2 + 15 + 0 + 632 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 365362220304 + 1878259286016 = 604452^2 + 1370496^2 .

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 (36).

It is not an unprimeable number, because it can be changed into a prime (2243621506327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15353721 + ... + 15499160.

Almost surely, 2^{2243621506320} is an apocalyptic number.

2243621506320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243621506320 is an abundant number, since it is smaller than the sum of its proper divisors (5365809898632).

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

2243621506320 is a wasteful number, since it uses less digits than its factorization.

2243621506320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30853001 (or 30852992 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 2243621506320 its reverse (236051263422), we get a palindrome (2479672769742).

The spelling of 2243621506320 in words is "two trillion, two hundred forty-three billion, six hundred twenty-one million, five hundred six thousand, three hundred twenty".