29221856642 has 32 divisors (see below), whose sum is σ = 48084598080. Its totient is φ = 13208633280.

The previous prime is 29221856603. The next prime is 29221856659. The reversal of 29221856642 is 24665812292.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4976084 + ... + 4981952.

It is an arithmetic number, because the mean of its divisors is an integer number (1502643690).

Almost surely, 2^29221856642 is an apocalyptic number.

29221856642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

29221856642 is a deficient number, since it is larger than the sum of its proper divisors (18862741438).

29221856642 is a wasteful number, since it uses less digits than its factorization.

29221856642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106.

The product of its digits is 829440, while the sum is 47.

The spelling of 29221856642 in words is "twenty-nine billion, two hundred twenty-one million, eight hundred fifty-six thousand, six hundred forty-two".