21463746326 has 16 divisors (see below), whose sum is σ = 36649559808. Its totient is φ = 9332063400.

The previous prime is 21463746323. The next prime is 21463746331. The reversal of 21463746326 is 62364736412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21463746323) 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, 21208730 + ... + 21209741.

It is an arithmetic number, because the mean of its divisors is an integer number (2290597488).

Almost surely, 2^21463746326 is an apocalyptic number.

21463746326 is a deficient number, since it is larger than the sum of its proper divisors (15185813482).

21463746326 is a wasteful number, since it uses less digits than its factorization.

21463746326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42418507.

The product of its digits is 870912, while the sum is 44.

The spelling of 21463746326 in words is "twenty-one billion, four hundred sixty-three million, seven hundred forty-six thousand, three hundred twenty-six".