29285623481 has 2 divisors, whose sum is σ = 29285623482. Its totient is φ = 29285623480.

The previous prime is 29285623453. The next prime is 29285623489. The reversal of 29285623481 is 18432658292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22498500025 + 6787123456 = 149995^2 + 82384^2 .

It is a cyclic number.

It is not a de Polignac number, because 29285623481 - 2¹⁴ = 29285607097 is a prime.

It is a super-2 number, since 2×29285623481² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (29285623489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14642811740 + 14642811741.

It is an arithmetic number, because the mean of its divisors is an integer number (14642811741).

Almost surely, 2^29285623481 is an apocalyptic number.

It is an amenable number.

29285623481 is a deficient number, since it is larger than the sum of its proper divisors (1).

29285623481 is an equidigital number, since it uses as much as digits as its factorization.

29285623481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 50.

The spelling of 29285623481 in words is "twenty-nine billion, two hundred eighty-five million, six hundred twenty-three thousand, four hundred eighty-one".