66601652322 has 64 divisors (see below), whose sum is σ = 140745692160. Its totient is φ = 20969492544.

The previous prime is 66601652321. The next prime is 66601652323. The reversal of 66601652322 is 22325610666.

It is an interprime number because it is at equal distance from previous prime (66601652321) and next prime (66601652323).

It is not an unprimeable number, because it can be changed into a prime (66601652321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3522129 + ... + 3540987.

It is an arithmetic number, because the mean of its divisors is an integer number (2199151440).

Almost surely, 2^66601652322 is an apocalyptic number.

66601652322 is an abundant number, since it is smaller than the sum of its proper divisors (74144039838).

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

66601652322 is a wasteful number, since it uses less digits than its factorization.

66601652322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19207.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 66601652322 in words is "sixty-six billion, six hundred one million, six hundred fifty-two thousand, three hundred twenty-two".