66126352215 has 32 divisors (see below), whose sum is σ = 131909193216. Its totient is φ = 27481080960.

The previous prime is 66126352199. The next prime is 66126352217. The reversal of 66126352215 is 51225362166.

It is not a de Polignac number, because 66126352215 - 2⁴ = 66126352199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66126352217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28624972 + ... + 28627281.

It is an arithmetic number, because the mean of its divisors is an integer number (4122162288).

Almost surely, 2^66126352215 is an apocalyptic number.

66126352215 is a deficient number, since it is larger than the sum of its proper divisors (65782841001).

66126352215 is a wasteful number, since it uses less digits than its factorization.

66126352215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57252279.

The product of its digits is 129600, while the sum is 39.

The spelling of 66126352215 in words is "sixty-six billion, one hundred twenty-six million, three hundred fifty-two thousand, two hundred fifteen".