29090042881 has 12 divisors (see below), whose sum is σ = 31570825356. Its totient is φ = 26711060480.

The previous prime is 29090042837. The next prime is 29090042887. The reversal of 29090042881 is 18824009092.

It can be written as a sum of positive squares in 6 ways, for example, as 10674195856 + 18415847025 = 103316^2 + 135705^2 .

It is not a de Polignac number, because 29090042881 - 2⁷ = 29090042753 is a prime.

It is a super-2 number, since 2×29090042881² (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 (29090042887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480400 + ... + 537553.

It is an arithmetic number, because the mean of its divisors is an integer number (2630902113).

Almost surely, 2^29090042881 is an apocalyptic number.

It is an amenable number.

29090042881 is a deficient number, since it is larger than the sum of its proper divisors (2480782475).

29090042881 is a wasteful number, since it uses less digits than its factorization.

29090042881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018052 (or 1018011 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 29090042881 in words is "twenty-nine billion, ninety million, forty-two thousand, eight hundred eighty-one".