13850729556 has 24 divisors (see below), whose sum is σ = 33432796320. Its totient is φ = 4457705952.

The previous prime is 13850729551. The next prime is 13850729561. The reversal of 13850729556 is 65592705831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13850729551) and next prime (13850729561).

It is a junction number, because it is equal to n+sod(n) for n = 13850729499 and 13850729508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13850729551) 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, 19900126 + ... + 19900821.

It is an arithmetic number, because the mean of its divisors is an integer number (1393033180).

Almost surely, 2^13850729556 is an apocalyptic number.

It is an amenable number.

13850729556 is an abundant number, since it is smaller than the sum of its proper divisors (19582066764).

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

13850729556 is a wasteful number, since it uses less digits than its factorization.

13850729556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39800983 (or 39800981 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 13850729556 in words is "thirteen billion, eight hundred fifty million, seven hundred twenty-nine thousand, five hundred fifty-six".