21494444462 has 64 divisors (see below), whose sum is σ = 35471390400. Its totient is φ = 9729300480.

The previous prime is 21494444459. The next prime is 21494444483. The reversal of 21494444462 is 26444449412.

It is a super-2 number, since 2×21494444462² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32916128 + ... + 32916780.

It is an arithmetic number, because the mean of its divisors is an integer number (554240475).

Almost surely, 2^21494444462 is an apocalyptic number.

21494444462 is a deficient number, since it is larger than the sum of its proper divisors (13976945938).

21494444462 is a wasteful number, since it uses less digits than its factorization.

21494444462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its digits is 884736, while the sum is 44.

The spelling of 21494444462 in words is "twenty-one billion, four hundred ninety-four million, four hundred forty-four thousand, four hundred sixty-two".