20903612466 has 16 divisors (see below), whose sum is σ = 45607881888. Its totient is φ = 6334428000.

The previous prime is 20903612461. The next prime is 20903612479. The reversal of 20903612466 is 66421630902.

It is a super-2 number, since 2×20903612466² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20903612461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158360635 + ... + 158360766.

It is an arithmetic number, because the mean of its divisors is an integer number (2850492618).

Almost surely, 2^20903612466 is an apocalyptic number.

20903612466 is an abundant number, since it is smaller than the sum of its proper divisors (24704269422).

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

20903612466 is a wasteful number, since it uses less digits than its factorization.

20903612466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316721417.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 20903612466 in words is "twenty billion, nine hundred three million, six hundred twelve thousand, four hundred sixty-six".