405897163226 has 16 divisors (see below), whose sum is σ = 620376496128. Its totient is φ = 199105530000.

The previous prime is 405897163219. The next prime is 405897163241. The reversal of 405897163226 is 622361798504.

It is a super-2 number, since 2×405897163226² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493351 + ... + 1744101.

It is an arithmetic number, because the mean of its divisors is an integer number (38773531008).

It is a 1-persistent number, because it is pandigital, but 2⋅405897163226 = 811794326452 is not.

Almost surely, 2^405897163226 is an apocalyptic number.

405897163226 is a deficient number, since it is larger than the sum of its proper divisors (214479332902).

405897163226 is a wasteful number, since it uses less digits than its factorization.

405897163226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266077.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 405897163226 in words is "four hundred five billion, eight hundred ninety-seven million, one hundred sixty-three thousand, two hundred twenty-six".