29628337681 has 8 divisors (see below), whose sum is σ = 31528828800. Its totient is φ = 27745363008.

The previous prime is 29628337657. The next prime is 29628337721. The reversal of 29628337681 is 18673382692.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29628337681 - 2⁹ = 29628337169 is a prime.

It is a super-2 number, since 2×29628337681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29628337631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4375621 + ... + 4382386.

It is an arithmetic number, because the mean of its divisors is an integer number (3941103600).

Almost surely, 2^29628337681 is an apocalyptic number.

It is an amenable number.

29628337681 is a deficient number, since it is larger than the sum of its proper divisors (1900491119).

29628337681 is a wasteful number, since it uses less digits than its factorization.

29628337681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8758223.

The product of its digits is 5225472, while the sum is 55.

The spelling of 29628337681 in words is "twenty-nine billion, six hundred twenty-eight million, three hundred thirty-seven thousand, six hundred eighty-one".