21246645364262 has 32 divisors (see below), whose sum is σ = 34463450972160. Its totient is φ = 9785459781760.

The previous prime is 21246645364237. The next prime is 21246645364271. The reversal of 21246645364262 is 26246354664212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81481289 + ... + 81741627.

It is an arithmetic number, because the mean of its divisors is an integer number (1076982842880).

Almost surely, 2^{21246645364262} is an apocalyptic number.

21246645364262 is a deficient number, since it is larger than the sum of its proper divisors (13216805607898).

21246645364262 is a wasteful number, since it uses less digits than its factorization.

21246645364262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311476.

The product of its digits is 19906560, while the sum is 53.

The spelling of 21246645364262 in words is "twenty-one trillion, two hundred forty-six billion, six hundred forty-five million, three hundred sixty-four thousand, two hundred sixty-two".