29385742049281 has 4 divisors (see below), whose sum is σ = 29600236516932. Its totient is φ = 29171247581632.

The previous prime is 29385742049263. The next prime is 29385742049303. The reversal of 29385742049281 is 18294024758392.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20902415911056 + 8483326138225 = 4571916^2 + 2912615^2 .

It is a cyclic number.

It is not a de Polignac number, because 29385742049281 - 2³³ = 29377152114689 is a prime.

It is a super-2 number, since 2×29385742049281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29385742649281) 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, 107247233620 + ... + 107247233893.

It is an arithmetic number, because the mean of its divisors is an integer number (7400059129233).

Almost surely, 2^{29385742049281} is an apocalyptic number.

It is an amenable number.

29385742049281 is a deficient number, since it is larger than the sum of its proper divisors (214494467651).

29385742049281 is a wasteful number, since it uses less digits than its factorization.

29385742049281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214494467650.

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 29385742049281 in words is "twenty-nine trillion, three hundred eighty-five billion, seven hundred forty-two million, forty-nine thousand, two hundred eighty-one".