20466626164520 has 32 divisors (see below), whose sum is σ = 47029694169600. Its totient is φ = 8012466412608.

The previous prime is 20466626164511. The next prime is 20466626164547. The reversal of 20466626164520 is 2546162666402.

It is a super-2 number, since 2×20466626164520² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5443249760 + ... + 5443253519.

It is an arithmetic number, because the mean of its divisors is an integer number (1469677942800).

Almost surely, 2^{20466626164520} is an apocalyptic number.

20466626164520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20466626164520 is an abundant number, since it is smaller than the sum of its proper divisors (26563068005080).

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

20466626164520 is a wasteful number, since it uses less digits than its factorization.

20466626164520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10886503337 (or 10886503333 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 20466626164520 in words is "twenty trillion, four hundred sixty-six billion, six hundred twenty-six million, one hundred sixty-four thousand, five hundred twenty".