29081638704 has 20 divisors (see below), whose sum is σ = 75127566776. Its totient is φ = 9693879552.

The previous prime is 29081638673. The next prime is 29081638709. The reversal of 29081638704 is 40783618092.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 605867473 = 29081638704 / (2 + 9 + 0 + 8 + 1 + 6 + 3 + 8 + 7 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (29081638709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 302933689 + ... + 302933784.

Almost surely, 2^29081638704 is an apocalyptic number.

29081638704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

29081638704 is an abundant number, since it is smaller than the sum of its proper divisors (46045928072).

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

29081638704 is a wasteful number, since it uses less digits than its factorization.

29081638704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605867484 (or 605867478 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 29081638704 in words is "twenty-nine billion, eighty-one million, six hundred thirty-eight thousand, seven hundred four".