20343777333605 has 16 divisors (see below), whose sum is σ = 26632680220224. Its totient is φ = 14795015393280.

The previous prime is 20343777333587. The next prime is 20343777333619. The reversal of 20343777333605 is 50633377734302.

It is not a de Polignac number, because 20343777333605 - 2¹⁶ = 20343777268069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3943964 + ... + 7499493.

It is an arithmetic number, because the mean of its divisors is an integer number (1664542513764).

Almost surely, 2^{20343777333605} is an apocalyptic number.

It is an amenable number.

20343777333605 is a deficient number, since it is larger than the sum of its proper divisors (6288902886619).

20343777333605 is a wasteful number, since it uses less digits than its factorization.

20343777333605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11475796.

The product of its (nonzero) digits is 20003760, while the sum is 53.

The spelling of 20343777333605 in words is "twenty trillion, three hundred forty-three billion, seven hundred seventy-seven million, three hundred thirty-three thousand, six hundred five".