66053748615 has 64 divisors (see below), whose sum is σ = 113482752000. Its totient is φ = 32709308544.

The previous prime is 66053748587. The next prime is 66053748619. The reversal of 66053748615 is 51684735066.

It is not a de Polignac number, because 66053748615 - 2²⁸ = 65785313159 is a prime.

It is a super-2 number, since 2×66053748615² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66053748619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3791214 + ... + 3808596.

It is an arithmetic number, because the mean of its divisors is an integer number (1773168000).

Almost surely, 2^66053748615 is an apocalyptic number.

66053748615 is a deficient number, since it is larger than the sum of its proper divisors (47429003385).

66053748615 is a wasteful number, since it uses less digits than its factorization.

66053748615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17676.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 66053748615 in words is "sixty-six billion, fifty-three million, seven hundred forty-eight thousand, six hundred fifteen".