405404553100 has 18 divisors (see below), whose sum is σ = 879727880444. Its totient is φ = 162161821200.

The previous prime is 405404553017. The next prime is 405404553107. The reversal of 405404553100 is 1355404504.

It is a happy number.

It is a super-2 number, since 2×405404553100² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (405404553107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2027022666 + ... + 2027022865.

Almost surely, 2^405404553100 is an apocalyptic number.

It is an amenable number.

405404553100 is an abundant number, since it is smaller than the sum of its proper divisors (474323327344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405404553100 is a wasteful number, since it uses less digits than its factorization.

405404553100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054045545 (or 4054045538 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 405404553100 its reverse (1355404504), we get a palindrome (406759957604).

The spelling of 405404553100 in words is "four hundred five billion, four hundred four million, five hundred fifty-three thousand, one hundred".