22621554436 has 12 divisors (see below), whose sum is σ = 42632929612. Its totient is φ = 10440717408.

The previous prime is 22621554409. The next prime is 22621554457. The reversal of 22621554436 is 63445512622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7156144836 + 15465409600 = 84594^2 + 124360^2 .

It is a super-2 number, since 2×22621554436² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217514895 + ... + 217514998.

Almost surely, 2^22621554436 is an apocalyptic number.

22621554436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22621554436 is a deficient number, since it is larger than the sum of its proper divisors (20011375176).

22621554436 is a wasteful number, since it uses less digits than its factorization.

22621554436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435029910 (or 435029908 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The spelling of 22621554436 in words is "twenty-two billion, six hundred twenty-one million, five hundred fifty-four thousand, four hundred thirty-six".