13120643430 has 96 divisors (see below), whose sum is σ = 34799746176. Its totient is φ = 3428635392.

The previous prime is 13120643423. The next prime is 13120643441. The reversal of 13120643430 is 3434602131.

13120643430 is a `hidden beast` number, since 1 + 3 + 12 + 0 + 643 + 4 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 13120643394 and 13120643403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6786744 + ... + 6788676.

It is an arithmetic number, because the mean of its divisors is an integer number (362497356).

Almost surely, 2^13120643430 is an apocalyptic number.

13120643430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13120643430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17399873088).

13120643430 is an abundant number, since it is smaller than the sum of its proper divisors (21679102746).

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

13120643430 is a wasteful number, since it uses less digits than its factorization.

13120643430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422 (or 3419 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The spelling of 13120643430 in words is "thirteen billion, one hundred twenty million, six hundred forty-three thousand, four hundred thirty".