66136065023 has 8 divisors (see below), whose sum is σ = 75589158048. Its totient is φ = 56684242944.

The previous prime is 66136064977. The next prime is 66136065059. The reversal of 66136065023 is 32056063166.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66136065023 - 2¹² = 66136060927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66136065223) 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, 203486 + ... + 416747.

It is an arithmetic number, because the mean of its divisors is an integer number (9448644756).

Almost surely, 2^66136065023 is an apocalyptic number.

66136065023 is a deficient number, since it is larger than the sum of its proper divisors (9453093025).

66136065023 is a wasteful number, since it uses less digits than its factorization.

66136065023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635473.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 66136065023 in words is "sixty-six billion, one hundred thirty-six million, sixty-five thousand, twenty-three".