100434120320 has 64 divisors (see below), whose sum is σ = 240221872800. Its totient is φ = 40153310208.

The previous prime is 100434120317. The next prime is 100434120337. The reversal of 100434120320 is 23021434001.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 100434120292 and 100434120301.

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, 1258571 + ... + 1335989.

Almost surely, 2^100434120320 is an apocalyptic number.

100434120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100434120320 is an abundant number, since it is smaller than the sum of its proper divisors (139787752480).

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

100434120320 is an equidigital number, since it uses as much as digits as its factorization.

100434120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79465 (or 79453 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 100434120320 its reverse (23021434001), we get a palindrome (123455554321).

The spelling of 100434120320 in words is "one hundred billion, four hundred thirty-four million, one hundred twenty thousand, three hundred twenty".