13556387740 has 24 divisors (see below), whose sum is σ = 32535330912. Its totient is φ = 4647904320.

The previous prime is 13556387731. The next prime is 13556387807. The reversal of 13556387740 is 4778365531.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48415531 + ... + 48415810.

It is an arithmetic number, because the mean of its divisors is an integer number (1355638788).

Almost surely, 2^13556387740 is an apocalyptic number.

13556387740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13556387740 is an abundant number, since it is smaller than the sum of its proper divisors (18978943172).

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

13556387740 is a wasteful number, since it uses less digits than its factorization.

13556387740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96831357 (or 96831355 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 13556387740 in words is "thirteen billion, five hundred fifty-six million, three hundred eighty-seven thousand, seven hundred forty".