1636272516123 has 12 divisors (see below), whose sum is σ = 2701148280688. Its totient is φ = 935012866320.

The previous prime is 1636272516103. The next prime is 1636272516187. The reversal of 1636272516123 is 3216152726361.

1636272516123 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 2 + 7 + 2 + 516 + 123 = 666.

It is not a de Polignac number, because 1636272516123 - 2¹⁰ = 1636272515099 is a prime.

It is a super-2 number, since 2×1636272516123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1636272516103) 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 11 ways as a sum of consecutive naturals, for example, 12986289748 + ... + 12986289873.

Almost surely, 2^{1636272516123} is an apocalyptic number.

1636272516123 is a deficient number, since it is larger than the sum of its proper divisors (1064875764565).

1636272516123 is a wasteful number, since it uses less digits than its factorization.

1636272516123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25972579634 (or 25972579631 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 1636272516123 in words is "one trillion, six hundred thirty-six billion, two hundred seventy-two million, five hundred sixteen thousand, one hundred twenty-three".