67066665435 has 96 divisors (see below), whose sum is σ = 145066222080. Its totient is φ = 27846374400.

The previous prime is 67066665431. The next prime is 67066665461. The reversal of 67066665435 is 53456666076.

It is not a de Polignac number, because 67066665435 - 2² = 67066665431 is a prime.

It is a super-2 number, since 2×67066665435² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67066665431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4049251 + ... + 4065779.

It is an arithmetic number, because the mean of its divisors is an integer number (1511106480).

Almost surely, 2^67066665435 is an apocalyptic number.

67066665435 is an abundant number, since it is smaller than the sum of its proper divisors (77999556645).

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

67066665435 is a wasteful number, since it uses less digits than its factorization.

67066665435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17729 (or 17726 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 54.

The spelling of 67066665435 in words is "sixty-seven billion, sixty-six million, six hundred sixty-five thousand, four hundred thirty-five".