651222636266 has 16 divisors (see below), whose sum is σ = 1034558904960. Its totient is φ = 306379450560.

The previous prime is 651222636247. The next prime is 651222636269. The reversal of 651222636266 is 662636222156.

It is a self number, because there is not a number n which added to its sum of digits gives 651222636266.

It is not an unprimeable number, because it can be changed into a prime (651222636269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310440 + ... + 2576931.

It is an arithmetic number, because the mean of its divisors is an integer number (64659931560).

Almost surely, 2^651222636266 is an apocalyptic number.

651222636266 is a deficient number, since it is larger than the sum of its proper divisors (383336268694).

651222636266 is a wasteful number, since it uses less digits than its factorization.

651222636266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4891309.

The product of its digits is 1866240, while the sum is 47.

The spelling of 651222636266 in words is "six hundred fifty-one billion, two hundred twenty-two million, six hundred thirty-six thousand, two hundred sixty-six".