29191084668 has 24 divisors (see below), whose sum is σ = 75680590160. Its totient is φ = 9730361520.

The previous prime is 29191084661. The next prime is 29191084687. The reversal of 29191084668 is 86648019192.

29191084668 is a `hidden beast` number, since 2 + 91 + 91 + 0 + 8 + 466 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29191084661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135143803 + ... + 135144018.

Almost surely, 2^29191084668 is an apocalyptic number.

It is an amenable number.

29191084668 is an abundant number, since it is smaller than the sum of its proper divisors (46489505492).

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

29191084668 is a wasteful number, since it uses less digits than its factorization.

29191084668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270287834 (or 270287826 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 29191084668 in words is "twenty-nine billion, one hundred ninety-one million, eighty-four thousand, six hundred sixty-eight".