66711430263 has 32 divisors (see below), whose sum is σ = 93588019200. Its totient is φ = 42209709696.

The previous prime is 66711430237. The next prime is 66711430301. The reversal of 66711430263 is 36203411766.

It is not a de Polignac number, because 66711430263 - 2⁸ = 66711430007 is a prime.

It is a super-2 number, since 2×66711430263² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66711430363) 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, 2780145 + ... + 2804037.

It is an arithmetic number, because the mean of its divisors is an integer number (2924625600).

Almost surely, 2^66711430263 is an apocalyptic number.

66711430263 is a deficient number, since it is larger than the sum of its proper divisors (26876588937).

66711430263 is a wasteful number, since it uses less digits than its factorization.

66711430263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24471.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 66711430263 in words is "sixty-six billion, seven hundred eleven million, four hundred thirty thousand, two hundred sixty-three".