16535553540123 has 16 divisors (see below), whose sum is σ = 22376972562560. Its totient is φ = 10858925822976.

The previous prime is 16535553540071. The next prime is 16535553540127. The reversal of 16535553540123 is 32104535553561.

It is not a de Polignac number, because 16535553540123 - 2¹² = 16535553536027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16535553540127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8284968 + ... + 10085226.

It is an arithmetic number, because the mean of its divisors is an integer number (1398560785160).

Almost surely, 2^{16535553540123} is an apocalyptic number.

16535553540123 is a deficient number, since it is larger than the sum of its proper divisors (5841419022437).

16535553540123 is a wasteful number, since it uses less digits than its factorization.

16535553540123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846026.

The product of its (nonzero) digits is 4050000, while the sum is 48.

The spelling of 16535553540123 in words is "sixteen trillion, five hundred thirty-five billion, five hundred fifty-three million, five hundred forty thousand, one hundred twenty-three".