66736339967 has 8 divisors (see below), whose sum is σ = 72879685200. Its totient is φ = 60605728960.

The previous prime is 66736339961. The next prime is 66736339973. The reversal of 66736339967 is 76993363766.

It is an interprime number because it is at equal distance from previous prime (66736339961) and next prime (66736339973).

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 66736339967 - 2⁶ = 66736339903 is a prime.

It is a super-2 number, since 2×66736339967² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66736339961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3172592 + ... + 3193557.

It is an arithmetic number, because the mean of its divisors is an integer number (9109960650).

Almost surely, 2^66736339967 is an apocalyptic number.

66736339967 is a deficient number, since it is larger than the sum of its proper divisors (6143345233).

66736339967 is a wasteful number, since it uses less digits than its factorization.

66736339967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367113.

The product of its digits is 138883248, while the sum is 65.

The spelling of 66736339967 in words is "sixty-six billion, seven hundred thirty-six million, three hundred thirty-nine thousand, nine hundred sixty-seven".