29489608081 has 4 divisors (see below), whose sum is σ = 29490470464. Its totient is φ = 29488745700.

The previous prime is 29489608069. The next prime is 29489608097. The reversal of 29489608081 is 18080698492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29489608081 - 2¹³ = 29489599889 is a prime.

It is a super-2 number, since 2×29489608081² (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 (29489608061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377685 + ... + 449026.

It is an arithmetic number, because the mean of its divisors is an integer number (7372617616).

Almost surely, 2^29489608081 is an apocalyptic number.

It is an amenable number.

29489608081 is a deficient number, since it is larger than the sum of its proper divisors (862383).

29489608081 is an equidigital number, since it uses as much as digits as its factorization.

29489608081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862382.

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 29489608081 in words is "twenty-nine billion, four hundred eighty-nine million, six hundred eight thousand, eighty-one".