13643632646155 has 32 divisors (see below), whose sum is σ = 17692211496960. Its totient is φ = 10066628033280.

The previous prime is 13643632646153. The next prime is 13643632646159. The reversal of 13643632646155 is 55164623634631.

It is not a de Polignac number, because 13643632646155 - 2¹ = 13643632646153 is a prime.

It is a super-2 number, since 2×13643632646155² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13643632646096 and 13643632646105.

It is not an unprimeable number, because it can be changed into a prime (13643632646153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1931419 + ... + 5569348.

It is an arithmetic number, because the mean of its divisors is an integer number (552881609280).

Almost surely, 2^{13643632646155} is an apocalyptic number.

13643632646155 is a deficient number, since it is larger than the sum of its proper divisors (4048578850805).

13643632646155 is a wasteful number, since it uses less digits than its factorization.

13643632646155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7501299.

The product of its digits is 27993600, while the sum is 55.

The spelling of 13643632646155 in words is "thirteen trillion, six hundred forty-three billion, six hundred thirty-two million, six hundred forty-six thousand, one hundred fifty-five".