66614847152377 has 4 divisors (see below), whose sum is σ = 66617704832896. Its totient is φ = 66611989471860.

The previous prime is 66614847152341. The next prime is 66614847152383. The reversal of 66614847152377 is 77325174841666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66614847152377 - 2¹¹ = 66614847150329 is a prime.

It is a super-2 number, since 2×66614847152377² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66614847152317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428805293 + ... + 1428851914.

It is an arithmetic number, because the mean of its divisors is an integer number (16654426208224).

Almost surely, 2^{66614847152377} is an apocalyptic number.

It is an amenable number.

66614847152377 is a deficient number, since it is larger than the sum of its proper divisors (2857680519).

66614847152377 is a wasteful number, since it uses less digits than its factorization.

66614847152377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857680518.

The product of its digits is 284497920, while the sum is 67.

The spelling of 66614847152377 in words is "sixty-six trillion, six hundred fourteen billion, eight hundred forty-seven million, one hundred fifty-two thousand, three hundred seventy-seven".