20170247067444 has 12 divisors (see below), whose sum is σ = 47063909824064. Its totient is φ = 6723415689144.

The previous prime is 20170247067433. The next prime is 20170247067493. The reversal of 20170247067444 is 44476074207102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20170247067393 and 20170247067402.

It is a congruent number.

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, 840426961132 + ... + 840426961155.

Almost surely, 2^{20170247067444} is an apocalyptic number.

It is an amenable number.

20170247067444 is an abundant number, since it is smaller than the sum of its proper divisors (26893662756620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20170247067444 is a wasteful number, since it uses less digits than its factorization.

20170247067444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680853922294 (or 1680853922292 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 48.

The spelling of 20170247067444 in words is "twenty trillion, one hundred seventy billion, two hundred forty-seven million, sixty-seven thousand, four hundred forty-four".