29661223922 has 18 divisors (see below), whose sum is σ = 48908667087. Its totient is φ = 13481156700.

The previous prime is 29661223919. The next prime is 29661223951. The reversal of 29661223922 is 22932216692.

It can be written as a sum of positive squares in only one way, i.e., 14830611961 + 14830611961 = 121781^2 + 121781^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=121781.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2673647 + ... + 2684717.

Almost surely, 2^29661223922 is an apocalyptic number.

29661223922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

29661223922 is a deficient number, since it is larger than the sum of its proper divisors (19247443165).

29661223922 is an frugal number, since it uses more digits than its factorization.

29661223922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22166 (or 11084 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The spelling of 29661223922 in words is "twenty-nine billion, six hundred sixty-one million, two hundred twenty-three thousand, nine hundred twenty-two".