29188162081 has 8 divisors (see below), whose sum is σ = 32164415360. Its totient is φ = 26316338832.

The previous prime is 29188162061. The next prime is 29188162097. The reversal of 29188162081 is 18026188192.

It is a happy number.

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 29188162081 - 2⁷ = 29188161953 is a prime.

It is a super-2 number, since 2×29188162081² (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 (29188162001) 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, 26106921 + ... + 26108038.

It is an arithmetic number, because the mean of its divisors is an integer number (4020551920).

Almost surely, 2^29188162081 is an apocalyptic number.

It is an amenable number.

29188162081 is a deficient number, since it is larger than the sum of its proper divisors (2976253279).

29188162081 is a wasteful number, since it uses less digits than its factorization.

29188162081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52215015.

The product of its (nonzero) digits is 110592, while the sum is 46.

The spelling of 29188162081 in words is "twenty-nine billion, one hundred eighty-eight million, one hundred sixty-two thousand, eighty-one".