405505501108 has 12 divisors (see below), whose sum is σ = 711215108100. Its totient is φ = 202301184512.

The previous prime is 405505501091. The next prime is 405505501109. The reversal of 405505501108 is 801105505504.

It can be written as a sum of positive squares in 2 ways, for example, as 282653849104 + 122851652004 = 531652^2 + 350502^2 .

It is a super-2 number, since 2×405505501108² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405505501109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112889491 + ... + 112893082.

It is an arithmetic number, because the mean of its divisors is an integer number (59267925675).

Almost surely, 2^405505501108 is an apocalyptic number.

It is an amenable number.

405505501108 is a deficient number, since it is larger than the sum of its proper divisors (305709606992).

405505501108 is a wasteful number, since it uses less digits than its factorization.

405505501108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225783026 (or 225783024 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 34.

The spelling of 405505501108 in words is "four hundred five billion, five hundred five million, five hundred one thousand, one hundred eight".