20005367771690 has 32 divisors (see below), whose sum is σ = 41154189606144. Its totient is φ = 6858934871040.

The previous prime is 20005367771663. The next prime is 20005367771713. The reversal of 20005367771690 is 9617776350002.

It is a super-2 number, since 2×20005367771690² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9814922 + ... + 11676618.

It is an arithmetic number, because the mean of its divisors is an integer number (1286068425192).

Almost surely, 2^{20005367771690} is an apocalyptic number.

20005367771690 is an abundant number, since it is smaller than the sum of its proper divisors (21148821834454).

20005367771690 is a wasteful number, since it uses less digits than its factorization.

20005367771690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015222.

The product of its (nonzero) digits is 3333960, while the sum is 53.

The spelling of 20005367771690 in words is "twenty trillion, five billion, three hundred sixty-seven million, seven hundred seventy-one thousand, six hundred ninety".