13812720730 has 16 divisors (see below), whose sum is σ = 24972429600. Its totient is φ = 5500747792.

The previous prime is 13812720703. The next prime is 13812720739. The reversal of 13812720730 is 3702721831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13812720739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3040180 + ... + 3044719.

It is an arithmetic number, because the mean of its divisors is an integer number (1560776850).

Almost surely, 2^13812720730 is an apocalyptic number.

13812720730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13812720730 is a deficient number, since it is larger than the sum of its proper divisors (11159708870).

13812720730 is a wasteful number, since it uses less digits than its factorization.

13812720730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6085133.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 13812720730 in words is "thirteen billion, eight hundred twelve million, seven hundred twenty thousand, seven hundred thirty".