66147368755 has 8 divisors (see below), whose sum is σ = 85482753552. Its totient is φ = 48847287648.

The previous prime is 66147368723. The next prime is 66147368827. The reversal of 66147368755 is 55786374166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66147368755 - 2⁵ = 66147368723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66147368755.

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, 508825849 + ... + 508825978.

It is an arithmetic number, because the mean of its divisors is an integer number (10685344194).

Almost surely, 2^66147368755 is an apocalyptic number.

66147368755 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66147368755 is a deficient number, since it is larger than the sum of its proper divisors (19335384797).

66147368755 is a wasteful number, since it uses less digits than its factorization.

66147368755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017651845.

The product of its digits is 25401600, while the sum is 58.

The spelling of 66147368755 in words is "sixty-six billion, one hundred forty-seven million, three hundred sixty-eight thousand, seven hundred fifty-five".