66837542024 has 64 divisors (see below), whose sum is σ = 142774272000. Its totient is φ = 29035955520.

The previous prime is 66837542003. The next prime is 66837542029. The reversal of 66837542024 is 42024573866.

It is a self number, because there is not a number n which added to its sum of digits gives 66837542024.

It is not an unprimeable number, because it can be changed into a prime (66837542029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2575787 + ... + 2601605.

It is an arithmetic number, because the mean of its divisors is an integer number (2230848000).

Almost surely, 2^66837542024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66837542024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71387136000).

66837542024 is an abundant number, since it is smaller than the sum of its proper divisors (75936729976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66837542024 is a wasteful number, since it uses less digits than its factorization.

66837542024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27138 (or 27134 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 47.

The spelling of 66837542024 in words is "sixty-six billion, eight hundred thirty-seven million, five hundred forty-two thousand, twenty-four".