66700737033737 has 4 divisors (see below), whose sum is σ = 66700768750800. Its totient is φ = 66700705316676.

The previous prime is 66700737033719. The next prime is 66700737033739. The reversal of 66700737033737 is 73733073700766.

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 66700737033737 - 2³⁰ = 66699663291913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66700737033739) 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, 12461483 + ... + 16990880.

It is an arithmetic number, because the mean of its divisors is an integer number (16675192187700).

Almost surely, 2^{66700737033737} is an apocalyptic number.

It is an amenable number.

66700737033737 is a deficient number, since it is larger than the sum of its proper divisors (31717063).

66700737033737 is a wasteful number, since it uses less digits than its factorization.

66700737033737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31717062.

The product of its (nonzero) digits is 49009212, while the sum is 59.

The spelling of 66700737033737 in words is "sixty-six trillion, seven hundred billion, seven hundred thirty-seven million, thirty-three thousand, seven hundred thirty-seven".