66147137324 has 6 divisors (see below), whose sum is σ = 115757490324. Its totient is φ = 33073568660.

The previous prime is 66147137281. The next prime is 66147137383. The reversal of 66147137324 is 42373174166.

It is a happy number.

It is a super-2 number, since 2×66147137324² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8268392162 + ... + 8268392169.

It is an arithmetic number, because the mean of its divisors is an integer number (19292915054).

Almost surely, 2^66147137324 is an apocalyptic number.

It is an amenable number.

66147137324 is a deficient number, since it is larger than the sum of its proper divisors (49610353000).

66147137324 is a wasteful number, since it uses less digits than its factorization.

66147137324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16536784335 (or 16536784333 counting only the distinct ones).

The product of its digits is 508032, while the sum is 44.

The spelling of 66147137324 in words is "sixty-six billion, one hundred forty-seven million, one hundred thirty-seven thousand, three hundred twenty-four".