66100968074 has 8 divisors (see below), whose sum is σ = 99163691748. Its totient is φ = 33046404160.

The previous prime is 66100967987. The next prime is 66100968077. The reversal of 66100968074 is 47086900166.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65411643049 + 689325025 = 255757^2 + 26255^2 .

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 (66100968077) 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, 2019647 + ... + 2052114.

Almost surely, 2^66100968074 is an apocalyptic number.

66100968074 is a deficient number, since it is larger than the sum of its proper divisors (33062723674).

66100968074 is a wasteful number, since it uses less digits than its factorization.

66100968074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079880.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 66100968074 in words is "sixty-six billion, one hundred million, nine hundred sixty-eight thousand, seventy-four".