20005216571234 has 8 divisors (see below), whose sum is σ = 30975819207168. Its totient is φ = 9679943502180.

The previous prime is 20005216571177. The next prime is 20005216571279. The reversal of 20005216571234 is 43217561250002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161332391642 + ... + 161332391765.

It is an arithmetic number, because the mean of its divisors is an integer number (3871977400896).

Almost surely, 2^{20005216571234} is an apocalyptic number.

20005216571234 is a deficient number, since it is larger than the sum of its proper divisors (10970602635934).

20005216571234 is a wasteful number, since it uses less digits than its factorization.

20005216571234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322664783440.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 20005216571234 in words is "twenty trillion, five billion, two hundred sixteen million, five hundred seventy-one thousand, two hundred thirty-four".