65663131226 has 72 divisors (see below), whose sum is σ = 126825756960. Its totient is φ = 24957979200.

The previous prime is 65663131217. The next prime is 65663131243. The reversal of 65663131226 is 62213136656.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2836085 + ... + 2859143.

Almost surely, 2^65663131226 is an apocalyptic number.

65663131226 is a deficient number, since it is larger than the sum of its proper divisors (61162625734).

65663131226 is a wasteful number, since it uses less digits than its factorization.

65663131226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23172 (or 23120 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

The spelling of 65663131226 in words is "sixty-five billion, six hundred sixty-three million, one hundred thirty-one thousand, two hundred twenty-six".