13856323900 has 72 divisors (see below), whose sum is σ = 30435048560. Its totient is φ = 5475133440.

The previous prime is 13856323889. The next prime is 13856323903. The reversal of 13856323900 is 932365831.

It is a super-2 number, since 2×13856323900² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856323903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7167334 + ... + 7169266.

Almost surely, 2^13856323900 is an apocalyptic number.

13856323900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13856323900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15217524280).

13856323900 is an abundant number, since it is smaller than the sum of its proper divisors (16578724660).

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

13856323900 is a wasteful number, since it uses less digits than its factorization.

13856323900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2776 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 13856323900 in words is "thirteen billion, eight hundred fifty-six million, three hundred twenty-three thousand, nine hundred".