21517673114043 has 12 divisors (see below), whose sum is σ = 31083342858048. Its totient is φ = 14344072576560.

The previous prime is 21517673114023. The next prime is 21517673114087. The reversal of 21517673114043 is 34041137671512.

21517673114043 is a `hidden beast` number, since 2 + 1 + 5 + 176 + 73 + 1 + 1 + 404 + 3 = 666.

It is not a de Polignac number, because 21517673114043 - 2³² = 21513378146747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21517673114043.

It is not an unprimeable number, because it can be changed into a prime (21517673114023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86772043 + ... + 87019668.

It is an arithmetic number, because the mean of its divisors is an integer number (2590278571504).

Almost surely, 2^{21517673114043} is an apocalyptic number.

21517673114043 is a deficient number, since it is larger than the sum of its proper divisors (9565669744005).

21517673114043 is a wasteful number, since it uses less digits than its factorization.

21517673114043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173805474 (or 173805471 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 21517673114043 in words is "twenty-one trillion, five hundred seventeen billion, six hundred seventy-three million, one hundred fourteen thousand, forty-three".