13391211540 has 48 divisors (see below), whose sum is σ = 42851878272. Its totient is φ = 3060848256.

The previous prime is 13391211529. The next prime is 13391211551. The reversal of 13391211540 is 4511219331.

It is an interprime number because it is at equal distance from previous prime (13391211529) and next prime (13391211551).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13391211498 and 13391211507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15941499 + ... + 15942338.

It is an arithmetic number, because the mean of its divisors is an integer number (892747464).

Almost surely, 2^13391211540 is an apocalyptic number.

13391211540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13391211540 is an abundant number, since it is smaller than the sum of its proper divisors (29460666732).

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

13391211540 is a wasteful number, since it uses less digits than its factorization.

13391211540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31883856 (or 31883854 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 13391211540 in words is "thirteen billion, three hundred ninety-one million, two hundred eleven thousand, five hundred forty".