29144021973 has 16 divisors (see below), whose sum is σ = 42811025472. Its totient is φ = 17488160000.

The previous prime is 29144021957. The next prime is 29144021983. The reversal of 29144021973 is 37912044192.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 29144021973 - 2⁴ = 29144021957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29144021903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4368708 + ... + 4375373.

It is an arithmetic number, because the mean of its divisors is an integer number (2675689092).

Almost surely, 2^29144021973 is an apocalyptic number.

It is an amenable number.

29144021973 is a deficient number, since it is larger than the sum of its proper divisors (13667003499).

29144021973 is a wasteful number, since it uses less digits than its factorization.

29144021973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744196.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 29144021973 in words is "twenty-nine billion, one hundred forty-four million, twenty-one thousand, nine hundred seventy-three".