29368217936881 has 2 divisors, whose sum is σ = 29368217936882. Its totient is φ = 29368217936880.

The previous prime is 29368217936821. The next prime is 29368217936887. The reversal of 29368217936881 is 18863971286392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17314711599025 + 12053506337856 = 4161095^2 + 3471816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29368217936881 is a prime.

It is a super-2 number, since 2×29368217936881² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29368217936887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14684108968440 + 14684108968441.

It is an arithmetic number, because the mean of its divisors is an integer number (14684108968441).

Almost surely, 2^{29368217936881} is an apocalyptic number.

It is an amenable number.

29368217936881 is a deficient number, since it is larger than the sum of its proper divisors (1).

29368217936881 is an equidigital number, since it uses as much as digits as its factorization.

29368217936881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376233984, while the sum is 73.

The spelling of 29368217936881 in words is "twenty-nine trillion, three hundred sixty-eight billion, two hundred seventeen million, nine hundred thirty-six thousand, eight hundred eighty-one".