66145402743 has 8 divisors (see below), whose sum is σ = 100792994688. Its totient is φ = 37797372984.

The previous prime is 66145402723. The next prime is 66145402777. The reversal of 66145402743 is 34720454166.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66145402743 - 2²⁴ = 66128625527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66145402695 and 66145402704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66145402703) 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, 1574890521 + ... + 1574890562.

It is an arithmetic number, because the mean of its divisors is an integer number (12599124336).

Almost surely, 2^66145402743 is an apocalyptic number.

66145402743 is a deficient number, since it is larger than the sum of its proper divisors (34647591945).

66145402743 is a wasteful number, since it uses less digits than its factorization.

66145402743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149781093.

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 66145402743 in words is "sixty-six billion, one hundred forty-five million, four hundred two thousand, seven hundred forty-three".