66036042537 has 4 divisors (see below), whose sum is σ = 88048056720. Its totient is φ = 44024028356.

The previous prime is 66036042529. The next prime is 66036042563. The reversal of 66036042537 is 73524063066.

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 66036042537 - 2³ = 66036042529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66036042587) 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, 11006007087 + ... + 11006007092.

It is an arithmetic number, because the mean of its divisors is an integer number (22012014180).

Almost surely, 2^66036042537 is an apocalyptic number.

It is an amenable number.

66036042537 is a deficient number, since it is larger than the sum of its proper divisors (22012014183).

66036042537 is a wasteful number, since it uses less digits than its factorization.

66036042537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22012014182.

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 66036042537 in words is "sixty-six billion, thirty-six million, forty-two thousand, five hundred thirty-seven".