13385140944 has 160 divisors (see below), whose sum is σ = 42001883136. Its totient is φ = 3585669120.

The previous prime is 13385140897. The next prime is 13385140963. The reversal of 13385140944 is 44904158331.

It is a super-2 number, since 2×13385140944² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 13385140896 and 13385140905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1543629 + ... + 1552275.

Almost surely, 2^13385140944 is an apocalyptic number.

13385140944 is a gapful number since it is divisible by the number (14) 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 13385140944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21000941568).

13385140944 is an abundant number, since it is smaller than the sum of its proper divisors (28616742192).

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

13385140944 is a wasteful number, since it uses less digits than its factorization.

13385140944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8953 (or 8947 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 13385140944 in words is "thirteen billion, three hundred eighty-five million, one hundred forty thousand, nine hundred forty-four".