66133663315 has 16 divisors (see below), whose sum is σ = 80948542176. Its totient is φ = 51854342400.

The previous prime is 66133663259. The next prime is 66133663331. The reversal of 66133663315 is 51336633166.

It is not a de Polignac number, because 66133663315 - 2¹⁵ = 66133630547 is a prime.

It is a super-2 number, since 2×66133663315² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300117 + ... + 471526.

It is an arithmetic number, because the mean of its divisors is an integer number (5059283886).

Almost surely, 2^66133663315 is an apocalyptic number.

66133663315 is a deficient number, since it is larger than the sum of its proper divisors (14814878861).

66133663315 is a wasteful number, since it uses less digits than its factorization.

66133663315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771990.

The product of its digits is 524880, while the sum is 43.

The spelling of 66133663315 in words is "sixty-six billion, one hundred thirty-three million, six hundred sixty-three thousand, three hundred fifteen".