13261582940 has 12 divisors (see below), whose sum is σ = 27849324216. Its totient is φ = 5304633168.

The previous prime is 13261582913. The next prime is 13261582967. The reversal of 13261582940 is 4928516231.

It is an interprime number because it is at equal distance from previous prime (13261582913) and next prime (13261582967).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331539554 + ... + 331539593.

It is an arithmetic number, because the mean of its divisors is an integer number (2320777018).

Almost surely, 2^13261582940 is an apocalyptic number.

13261582940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13261582940 is an abundant number, since it is smaller than the sum of its proper divisors (14587741276).

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

13261582940 is a wasteful number, since it uses less digits than its factorization.

13261582940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663079156 (or 663079154 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 13261582940 in words is "thirteen billion, two hundred sixty-one million, five hundred eighty-two thousand, nine hundred forty".