16556468822751 has 16 divisors (see below), whose sum is σ = 25934608506240. Its totient is φ = 9262360180320.

The previous prime is 16556468822741. The next prime is 16556468822849. The reversal of 16556468822751 is 15722886465561.

It is a happy number.

It is not a de Polignac number, because 16556468822751 - 2⁷ = 16556468822623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16556468822731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19296583281 + ... + 19296584138.

It is an arithmetic number, because the mean of its divisors is an integer number (1620913031640).

Almost surely, 2^{16556468822751} is an apocalyptic number.

16556468822751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16556468822751 is a deficient number, since it is larger than the sum of its proper divisors (9378139683489).

16556468822751 is a wasteful number, since it uses less digits than its factorization.

16556468822751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38593167446.

The product of its digits is 193536000, while the sum is 66.

The spelling of 16556468822751 in words is "sixteen trillion, five hundred fifty-six billion, four hundred sixty-eight million, eight hundred twenty-two thousand, seven hundred fifty-one".