105555432040 has 16 divisors (see below), whose sum is σ = 237499722180. Its totient is φ = 42222172800.

The previous prime is 105555432013. The next prime is 105555432043. The reversal of 105555432040 is 40234555501.

It can be written as a sum of positive squares in 2 ways, for example, as 103499897796 + 2055534244 = 321714^2 + 45338^2 .

It is a super-2 number, since 2×105555432040² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105555431987 and 105555432005.

It is not an unprimeable number, because it can be changed into a prime (105555432043) 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, 1319442861 + ... + 1319442940.

Almost surely, 2^105555432040 is an apocalyptic number.

105555432040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105555432040 is an abundant number, since it is smaller than the sum of its proper divisors (131944290140).

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

105555432040 is a wasteful number, since it uses less digits than its factorization.

105555432040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638885812 (or 2638885808 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 105555432040 its reverse (40234555501), we get a palindrome (145789987541).

The spelling of 105555432040 in words is "one hundred five billion, five hundred fifty-five million, four hundred thirty-two thousand, forty".