16442134557651 has 24 divisors (see below), whose sum is σ = 25940843950320. Its totient is φ = 9952612396800.

The previous prime is 16442134557623. The next prime is 16442134557749. The reversal of 16442134557651 is 15675543124461.

16442134557651 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 2 + 1 + 34 + 557 + 6 + 51 = 666.

It is not a de Polignac number, because 16442134557651 - 2¹⁴ = 16442134541267 is a prime.

It is a super-3 number, since 3×16442134557651³ (a number of 41 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16442134557851) 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, 102566490 + ... + 102726671.

It is an arithmetic number, because the mean of its divisors is an integer number (1080868497930).

Almost surely, 2^{16442134557651} is an apocalyptic number.

16442134557651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16442134557651 is a deficient number, since it is larger than the sum of its proper divisors (9498709392669).

16442134557651 is a wasteful number, since it uses less digits than its factorization.

16442134557651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205293987 (or 205293984 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 16442134557651 in words is "sixteen trillion, four hundred forty-two billion, one hundred thirty-four million, five hundred fifty-seven thousand, six hundred fifty-one".