29399605818 has 16 divisors (see below), whose sum is σ = 64144594656. Its totient is φ = 8908971440.

The previous prime is 29399605799. The next prime is 29399605841. The reversal of 29399605818 is 81850699392.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222724221 + ... + 222724352.

It is an arithmetic number, because the mean of its divisors is an integer number (4009037166).

Almost surely, 2^29399605818 is an apocalyptic number.

29399605818 is an abundant number, since it is smaller than the sum of its proper divisors (34744988838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29399605818 is a wasteful number, since it uses less digits than its factorization.

29399605818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445448589.

The product of its (nonzero) digits is 8398080, while the sum is 60.

The spelling of 29399605818 in words is "twenty-nine billion, three hundred ninety-nine million, six hundred five thousand, eight hundred eighteen".