20666701000 has 64 divisors (see below), whose sum is σ = 52756479360. Its totient is φ = 7515160000.

The previous prime is 20666700961. The next prime is 20666701043. The reversal of 20666701000 is 10766602.

It is a super-2 number, since 2×20666701000² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20666701000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 928396 + ... + 950395.

It is an arithmetic number, because the mean of its divisors is an integer number (824319990).

Almost surely, 2^20666701000 is an apocalyptic number.

20666701000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20666701000 is an abundant number, since it is smaller than the sum of its proper divisors (32089778360).

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

20666701000 is a wasteful number, since it uses less digits than its factorization.

20666701000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878823 (or 1878809 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 20666701000 in words is "twenty billion, six hundred sixty-six million, seven hundred one thousand".