72230400029 has 2 divisors, whose sum is σ = 72230400030. Its totient is φ = 72230400028.

The previous prime is 72230399971. The next prime is 72230400031. The reversal of 72230400029 is 92000403227.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64920492025 + 7309908004 = 254795^2 + 85498^2 .

It is a cyclic number.

It is not a de Polignac number, because 72230400029 - 2¹² = 72230395933 is a prime.

Together with 72230400031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72230399974 and 72230400010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72230400049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36115200014 + 36115200015.

It is an arithmetic number, because the mean of its divisors is an integer number (36115200015).

Almost surely, 2^72230400029 is an apocalyptic number.

It is an amenable number.

72230400029 is a deficient number, since it is larger than the sum of its proper divisors (1).

72230400029 is an equidigital number, since it uses as much as digits as its factorization.

72230400029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The spelling of 72230400029 in words is "seventy-two billion, two hundred thirty million, four hundred thousand, twenty-nine".