66614847152378 has 16 divisors (see below), whose sum is σ = 114197845429440. Its totient is φ = 28548979058976.

The previous prime is 66614847152341. The next prime is 66614847152383. The reversal of 66614847152378 is 87325174841666.

It is a super-2 number, since 2×66614847152378² (a number of 28 digits) contains 22 as substring.

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, 18374051 + ... + 21698742.

It is an arithmetic number, because the mean of its divisors is an integer number (7137365339340).

Almost surely, 2^{66614847152378} is an apocalyptic number.

66614847152378 is a deficient number, since it is larger than the sum of its proper divisors (47582998277062).

66614847152378 is a wasteful number, since it uses less digits than its factorization.

66614847152378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40191541.

The product of its digits is 325140480, while the sum is 68.

The spelling of 66614847152378 in words is "sixty-six trillion, six hundred fourteen billion, eight hundred forty-seven million, one hundred fifty-two thousand, three hundred seventy-eight".