2156661450330 has 32 divisors (see below), whose sum is σ = 5176115784000. Its totient is φ = 575095464192.

The previous prime is 2156661450313. The next prime is 2156661450341. The reversal of 2156661450330 is 330541666512.

It is a super-2 number, since 2×2156661450330² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368626 + ... + 2109314.

It is an arithmetic number, because the mean of its divisors is an integer number (161753618250).

Almost surely, 2^{2156661450330} is an apocalyptic number.

2156661450330 is an abundant number, since it is smaller than the sum of its proper divisors (3019454333670).

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

2156661450330 is a wasteful number, since it uses less digits than its factorization.

2156661450330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781998.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 2156661450330 in words is "two trillion, one hundred fifty-six billion, six hundred sixty-one million, four hundred fifty thousand, three hundred thirty".