66647000022 has 16 divisors (see below), whose sum is σ = 141134823792. Its totient is φ = 20908862720.

The previous prime is 66647000009. The next prime is 66647000023. The reversal of 66647000022 is 22000074666.

66647000022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66647000022² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66647000023) 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, 326700879 + ... + 326701082.

It is an arithmetic number, because the mean of its divisors is an integer number (8820926487).

Almost surely, 2^66647000022 is an apocalyptic number.

66647000022 is an abundant number, since it is smaller than the sum of its proper divisors (74487823770).

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

66647000022 is a wasteful number, since it uses less digits than its factorization.

66647000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653401983.

The product of its (nonzero) digits is 24192, while the sum is 33.

Adding to 66647000022 its reverse (22000074666), we get a palindrome (88647074688).

The spelling of 66647000022 in words is "sixty-six billion, six hundred forty-seven million, twenty-two", and thus it is an aban number.