66834730410 has 192 divisors, whose sum is σ = 207967409280. Its totient is φ = 13621063680.

The previous prime is 66834730399. The next prime is 66834730411. The reversal of 66834730410 is 1403743866.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (66834730411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 404430 + ... + 545190.

It is an arithmetic number, because the mean of its divisors is an integer number (1083163590).

Almost surely, 2^66834730410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66834730410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103983704640).

66834730410 is an abundant number, since it is smaller than the sum of its proper divisors (141132678870).

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

66834730410 is a wasteful number, since it uses less digits than its factorization.

66834730410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140821 (or 140814 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 66834730410 in words is "sixty-six billion, eight hundred thirty-four million, seven hundred thirty thousand, four hundred ten".