66066601506 has 16 divisors (see below), whose sum is σ = 132146973504. Its totient is φ = 22019905424.

The previous prime is 66066601487. The next prime is 66066601553. The reversal of 66066601506 is 60510666066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510870 + ... + 626993.

It is an arithmetic number, because the mean of its divisors is an integer number (8259185844).

Almost surely, 2^66066601506 is an apocalyptic number.

66066601506 is an abundant number, since it is smaller than the sum of its proper divisors (66080371998).

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

66066601506 is a wasteful number, since it uses less digits than its factorization.

66066601506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147545.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 66066601506 in words is "sixty-six billion, sixty-six million, six hundred one thousand, five hundred six".