21828149626 has 16 divisors (see below), whose sum is σ = 33259531680. Its totient is φ = 10741919760.

The previous prime is 21828149611. The next prime is 21828149633. The reversal of 21828149626 is 62694182812.

It is a self number, because there is not a number n which added to its sum of digits gives 21828149626.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87360 + ... + 226468.

It is an arithmetic number, because the mean of its divisors is an integer number (2078720730).

Almost surely, 2^21828149626 is an apocalyptic number.

21828149626 is a deficient number, since it is larger than the sum of its proper divisors (11431382054).

21828149626 is a wasteful number, since it uses less digits than its factorization.

21828149626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140349.

The product of its digits is 663552, while the sum is 49.

The spelling of 21828149626 in words is "twenty-one billion, eight hundred twenty-eight million, one hundred forty-nine thousand, six hundred twenty-six".