13351243720 has 32 divisors (see below), whose sum is σ = 30738913920. Its totient is φ = 5216299200.

The previous prime is 13351243699. The next prime is 13351243739. The reversal of 13351243720 is 2734215331.

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, 3879456 + ... + 3882895.

It is an arithmetic number, because the mean of its divisors is an integer number (960591060).

Almost surely, 2^13351243720 is an apocalyptic number.

13351243720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13351243720 is an abundant number, since it is smaller than the sum of its proper divisors (17387670200).

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

13351243720 is a wasteful number, since it uses less digits than its factorization.

13351243720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762405 (or 7762401 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 13351243720 in words is "thirteen billion, three hundred fifty-one million, two hundred forty-three thousand, seven hundred twenty".