66250808855 has 64 divisors (see below), whose sum is σ = 101700403200. Its totient is φ = 40228513920.

The previous prime is 66250808839. The next prime is 66250808857. The reversal of 66250808855 is 55880805266.

It is not a de Polignac number, because 66250808855 - 2⁴ = 66250808839 is a prime.

It is a super-2 number, since 2×66250808855² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66250808797 and 66250808806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66250808857) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6269066 + ... + 6279624.

It is an arithmetic number, because the mean of its divisors is an integer number (1589068800).

Almost surely, 2^66250808855 is an apocalyptic number.

66250808855 is a deficient number, since it is larger than the sum of its proper divisors (35449594345).

66250808855 is a wasteful number, since it uses less digits than its factorization.

66250808855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11004.

The product of its (nonzero) digits is 4608000, while the sum is 53.

The spelling of 66250808855 in words is "sixty-six billion, two hundred fifty million, eight hundred eight thousand, eight hundred fifty-five".