13139213640 has 512 divisors, whose sum is σ = 50927616000. Its totient is φ = 2639609856.

The previous prime is 13139213629. The next prime is 13139213669. The reversal of 13139213640 is 4631293131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 21433974 + ... + 21434586.

It is an arithmetic number, because the mean of its divisors is an integer number (99468000).

Almost surely, 2^13139213640 is an apocalyptic number.

13139213640 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 13139213640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25463808000).

13139213640 is an abundant number, since it is smaller than the sum of its proper divisors (37788402360).

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

13139213640 is a wasteful number, since it uses less digits than its factorization.

13139213640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 13139213640 in words is "thirteen billion, one hundred thirty-nine million, two hundred thirteen thousand, six hundred forty".