66614273247 has 16 divisors (see below), whose sum is σ = 88919550720. Its totient is φ = 44359291392.

The previous prime is 66614273197. The next prime is 66614273269. The reversal of 66614273247 is 74237241666.

66614273247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66614273247 - 2¹² = 66614269151 is a prime.

It is a super-2 number, since 2×66614273247² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66614273196 and 66614273205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66614273147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15529279 + ... + 15533567.

It is an arithmetic number, because the mean of its divisors is an integer number (5557471920).

Almost surely, 2^66614273247 is an apocalyptic number.

66614273247 is a deficient number, since it is larger than the sum of its proper divisors (22305277473).

66614273247 is a wasteful number, since it uses less digits than its factorization.

66614273247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8942.

The product of its digits is 2032128, while the sum is 48.

The spelling of 66614273247 in words is "sixty-six billion, six hundred fourteen million, two hundred seventy-three thousand, two hundred forty-seven".