66001501100 has 36 divisors (see below), whose sum is σ = 144832527000. Its totient is φ = 26103960960.

The previous prime is 66001501087. The next prime is 66001501117. The reversal of 66001501100 is 110510066.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3699050 + ... + 3716849.

It is an arithmetic number, because the mean of its divisors is an integer number (4023125750).

Almost surely, 2^66001501100 is an apocalyptic number.

It is an amenable number.

66001501100 is an abundant number, since it is smaller than the sum of its proper divisors (78831025900).

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

66001501100 is a wasteful number, since it uses less digits than its factorization.

66001501100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416002 (or 7415995 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 66001501100 in words is "sixty-six billion, one million, five hundred one thousand, one hundred".