66736707366737 has 4 divisors (see below), whose sum is σ = 67216827563760. Its totient is φ = 66256587169716.

The previous prime is 66736707366661. The next prime is 66736707366751. The reversal of 66736707366737 is 73766370763766.

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 66736707366737 - 2⁸ = 66736707366481 is a prime.

It is a super-2 number, since 2×66736707366737² (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 (66736707362737) 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, 240060098303 + ... + 240060098580.

It is an arithmetic number, because the mean of its divisors is an integer number (16804206890940).

Almost surely, 2^{66736707366737} is an apocalyptic number.

It is an amenable number.

66736707366737 is a deficient number, since it is larger than the sum of its proper divisors (480120197023).

66736707366737 is a wasteful number, since it uses less digits than its factorization.

66736707366737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480120197022.

The product of its (nonzero) digits is 3528663264, while the sum is 74.

The spelling of 66736707366737 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred seven million, three hundred sixty-six thousand, seven hundred thirty-seven".