29891141886 has 16 divisors (see below), whose sum is σ = 62928720000. Its totient is φ = 9439307928.

The previous prime is 29891141843. The next prime is 29891141893. The reversal of 29891141886 is 68814119892.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131101386 + ... + 131101613.

It is an arithmetic number, because the mean of its divisors is an integer number (3933045000).

Almost surely, 2^29891141886 is an apocalyptic number.

29891141886 is an abundant number, since it is smaller than the sum of its proper divisors (33037578114).

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

29891141886 is a wasteful number, since it uses less digits than its factorization.

29891141886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262203023.

The product of its digits is 1990656, while the sum is 57.

The spelling of 29891141886 in words is "twenty-nine billion, eight hundred ninety-one million, one hundred forty-one thousand, eight hundred eighty-six".