20666706360 has 32 divisors (see below), whose sum is σ = 62000119440. Its totient is φ = 5511121664.

The previous prime is 20666706337. The next prime is 20666706367. The reversal of 20666706360 is 6360766602.

It is a super-2 number, since 2×20666706360² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20666706367) 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, 86111157 + ... + 86111396.

Almost surely, 2^20666706360 is an apocalyptic number.

20666706360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20666706360 is an abundant number, since it is smaller than the sum of its proper divisors (41333413080).

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

20666706360 is a wasteful number, since it uses less digits than its factorization.

20666706360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172222567 (or 172222563 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 42.

The spelling of 20666706360 in words is "twenty billion, six hundred sixty-six million, seven hundred six thousand, three hundred sixty".