66135762548 has 24 divisors (see below), whose sum is σ = 118354051200. Its totient is φ = 32322152448.

The previous prime is 66135762547. The next prime is 66135762557. The reversal of 66135762548 is 84526753166.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66135762548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66135762547) 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, 84158 + ... + 373301.

It is an arithmetic number, because the mean of its divisors is an integer number (4931418800).

Almost surely, 2^66135762548 is an apocalyptic number.

It is an amenable number.

66135762548 is a deficient number, since it is larger than the sum of its proper divisors (52218288652).

66135762548 is a wasteful number, since it uses less digits than its factorization.

66135762548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458279 (or 458277 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 53.

The spelling of 66135762548 in words is "sixty-six billion, one hundred thirty-five million, seven hundred sixty-two thousand, five hundred forty-eight".