108643505240 has 16 divisors (see below), whose sum is σ = 244447886880. Its totient is φ = 43457402080.

The previous prime is 108643505233. The next prime is 108643505287. The reversal of 108643505240 is 42505346801.

It is a super-2 number, since 2×108643505240² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 108643505194 and 108643505203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358043776 + ... + 1358043855.

It is an arithmetic number, because the mean of its divisors is an integer number (15277992930).

Almost surely, 2^108643505240 is an apocalyptic number.

108643505240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108643505240 is an abundant number, since it is smaller than the sum of its proper divisors (135804381640).

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

108643505240 is a wasteful number, since it uses less digits than its factorization.

108643505240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716087642 (or 2716087638 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 108643505240 in words is "one hundred eight billion, six hundred forty-three million, five hundred five thousand, two hundred forty".