16668542455 has 16 divisors (see below), whose sum is σ = 20135966400. Its totient is φ = 13245960960.

The previous prime is 16668542447. The next prime is 16668542467. The reversal of 16668542455 is 55424586661.

It is not a de Polignac number, because 16668542455 - 2³ = 16668542447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486075 + ... + 519235.

It is an arithmetic number, because the mean of its divisors is an integer number (1258497900).

Almost surely, 2^16668542455 is an apocalyptic number.

16668542455 is a deficient number, since it is larger than the sum of its proper divisors (3467423945).

16668542455 is a wasteful number, since it uses less digits than its factorization.

16668542455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33834.

The product of its digits is 6912000, while the sum is 52.

The spelling of 16668542455 in words is "sixteen billion, six hundred sixty-eight million, five hundred forty-two thousand, four hundred fifty-five".