66201622260 has 24 divisors (see below), whose sum is σ = 185364542496. Its totient is φ = 17653765920.

The previous prime is 66201622237. The next prime is 66201622261. The reversal of 66201622260 is 6222610266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66201622261) 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, 551680126 + ... + 551680245.

It is an arithmetic number, because the mean of its divisors is an integer number (7723522604).

Almost surely, 2^66201622260 is an apocalyptic number.

66201622260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66201622260 is an abundant number, since it is smaller than the sum of its proper divisors (119162920236).

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

66201622260 is a wasteful number, since it uses less digits than its factorization.

66201622260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103360383 (or 1103360381 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 66201622260 in words is "sixty-six billion, two hundred one million, six hundred twenty-two thousand, two hundred sixty".