20064291438 has 16 divisors (see below), whose sum is σ = 40518182016. Its totient is φ = 6623163960.

The previous prime is 20064291437. The next prime is 20064291449. The reversal of 20064291438 is 83419246002.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20064291396 and 20064291405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20064291437) 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, 16232628 + ... + 16233863.

It is an arithmetic number, because the mean of its divisors is an integer number (2532386376).

Almost surely, 2^20064291438 is an apocalyptic number.

20064291438 is an abundant number, since it is smaller than the sum of its proper divisors (20453890578).

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

20064291438 is a wasteful number, since it uses less digits than its factorization.

20064291438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32466599.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 20064291438 in words is "twenty billion, sixty-four million, two hundred ninety-one thousand, four hundred thirty-eight".