29457838081 has 12 divisors (see below), whose sum is σ = 34441237908. Its totient is φ = 25121396832.

The previous prime is 29457838073. The next prime is 29457838099. The reversal of 29457838081 is 18083875492.

It can be written as a sum of positive squares in 2 ways, for example, as 28648947600 + 808890481 = 169260^2 + 28441^2 .

It is not a de Polignac number, because 29457838081 - 2³ = 29457838073 is a prime.

It is a super-2 number, since 2×29457838081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29457838031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1516186 + ... + 1535491.

It is an arithmetic number, because the mean of its divisors is an integer number (2870103159).

Almost surely, 2^29457838081 is an apocalyptic number.

It is an amenable number.

29457838081 is a deficient number, since it is larger than the sum of its proper divisors (4983399827).

29457838081 is a wasteful number, since it uses less digits than its factorization.

29457838081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051888 (or 3051881 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 29457838081 in words is "twenty-nine billion, four hundred fifty-seven million, eight hundred thirty-eight thousand, eighty-one".