20404040206264 has 64 divisors (see below), whose sum is σ = 47589842895840. Its totient is φ = 8057539522560.

The previous prime is 20404040206243. The next prime is 20404040206313. The reversal of 20404040206264 is 46260204040402.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent 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, 524559949 + ... + 524598844.

Almost surely, 2^{20404040206264} is an apocalyptic number.

It is an amenable number.

20404040206264 is an abundant number, since it is smaller than the sum of its proper divisors (27185802689576).

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

20404040206264 is a wasteful number, since it uses less digits than its factorization.

20404040206264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049158840 (or 1049158836 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 20404040206264 its reverse (46260204040402), we get a palindrome (66664244246666).

The spelling of 20404040206264 in words is "twenty trillion, four hundred four billion, forty million, two hundred six thousand, two hundred sixty-four".