66387478298 has 8 divisors (see below), whose sum is σ = 102793514880. Its totient is φ = 32122973340.

The previous prime is 66387478291. The next prime is 66387478301. The reversal of 66387478298 is 89287478366.

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

It is not an unprimeable number, because it can be changed into a prime (66387478291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535382828 + ... + 535382951.

It is an arithmetic number, because the mean of its divisors is an integer number (12849189360).

Almost surely, 2^66387478298 is an apocalyptic number.

66387478298 is a deficient number, since it is larger than the sum of its proper divisors (36406036582).

66387478298 is a wasteful number, since it uses less digits than its factorization.

66387478298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070765812.

The product of its digits is 195084288, while the sum is 68.

Adding to 66387478298 its sum of digits (68), we get a palindrome (66387478366).

The spelling of 66387478298 in words is "sixty-six billion, three hundred eighty-seven million, four hundred seventy-eight thousand, two hundred ninety-eight".