13844635572 has 12 divisors (see below), whose sum is σ = 32304149696. Its totient is φ = 4614878520.

The previous prime is 13844635561. The next prime is 13844635591. The reversal of 13844635572 is 27553644831.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×13844635572³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576859804 + ... + 576859827.

Almost surely, 2^13844635572 is an apocalyptic number.

13844635572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13844635572 is an abundant number, since it is smaller than the sum of its proper divisors (18459514124).

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

13844635572 is a wasteful number, since it uses less digits than its factorization.

13844635572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153719638 (or 1153719636 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 48.

The spelling of 13844635572 in words is "thirteen billion, eight hundred forty-four million, six hundred thirty-five thousand, five hundred seventy-two".