2156661450326 has 8 divisors (see below), whose sum is σ = 3239554931040. Its totient is φ = 1076809806648.

The previous prime is 2156661450313. The next prime is 2156661450341. The reversal of 2156661450326 is 6230541666512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2156661450326² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 760457486 + ... + 760460321.

It is an arithmetic number, because the mean of its divisors is an integer number (404944366380).

Almost surely, 2^{2156661450326} is an apocalyptic number.

2156661450326 is a deficient number, since it is larger than the sum of its proper divisors (1082893480714).

2156661450326 is a wasteful number, since it uses less digits than its factorization.

2156661450326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520918518.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 2156661450326 in words is "two trillion, one hundred fifty-six billion, six hundred sixty-one million, four hundred fifty thousand, three hundred twenty-six".