405269721223 has 2 divisors, whose sum is σ = 405269721224. Its totient is φ = 405269721222.

The previous prime is 405269721193. The next prime is 405269721287. The reversal of 405269721223 is 322127962504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405269721223 - 2¹³ = 405269713031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405269721223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405269781223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202634860611 + 202634860612.

It is an arithmetic number, because the mean of its divisors is an integer number (202634860612).

Almost surely, 2^405269721223 is an apocalyptic number.

405269721223 is a deficient number, since it is larger than the sum of its proper divisors (1).

405269721223 is an equidigital number, since it uses as much as digits as its factorization.

405269721223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 405269721223 in words is "four hundred five billion, two hundred sixty-nine million, seven hundred twenty-one thousand, two hundred twenty-three".