21694017170434 has 16 divisors (see below), whose sum is σ = 37250412159168. Its totient is φ = 9282268820592.

The previous prime is 21694017170431. The next prime is 21694017170453. The reversal of 21694017170434 is 43407171049612.

It is not an unprimeable number, because it can be changed into a prime (21694017170431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263916912 + ... + 1263934075.

It is an arithmetic number, because the mean of its divisors is an integer number (2328150759948).

Almost surely, 2^{21694017170434} is an apocalyptic number.

21694017170434 is a deficient number, since it is larger than the sum of its proper divisors (15556394988734).

21694017170434 is a wasteful number, since it uses less digits than its factorization.

21694017170434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527851609.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 21694017170434 in words is "twenty-one trillion, six hundred ninety-four billion, seventeen million, one hundred seventy thousand, four hundred thirty-four".