66715223433 has 8 divisors (see below), whose sum is σ = 90846261888. Its totient is φ = 43530500304.

The previous prime is 66715223383. The next prime is 66715223461. The reversal of 66715223433 is 33432251766.

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

It is not a de Polignac number, because 66715223433 - 2⁶ = 66715223369 is a prime.

It is a super-2 number, since 2×66715223433² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66715223233) 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, 236578666 + ... + 236578947.

It is an arithmetic number, because the mean of its divisors is an integer number (11355782736).

Almost surely, 2^66715223433 is an apocalyptic number.

It is an amenable number.

66715223433 is a deficient number, since it is larger than the sum of its proper divisors (24131038455).

66715223433 is a wasteful number, since it uses less digits than its factorization.

66715223433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473157663.

The product of its digits is 544320, while the sum is 42.

The spelling of 66715223433 in words is "sixty-six billion, seven hundred fifteen million, two hundred twenty-three thousand, four hundred thirty-three".