13641553926 has 336 divisors, whose sum is σ = 41475939840. Its totient is φ = 3266153280.

The previous prime is 13641553883. The next prime is 13641553927. The reversal of 13641553926 is 62935514631.

13641553926 is a `hidden beast` number, since 1 + 3 + 6 + 4 + 1 + 553 + 92 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13641553927) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 18972595 + ... + 18973313.

Almost surely, 2^13641553926 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13641553926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20737969920).

13641553926 is an abundant number, since it is smaller than the sum of its proper divisors (27834385914).

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

13641553926 is a wasteful number, since it uses less digits than its factorization.

13641553926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 755 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The spelling of 13641553926 in words is "thirteen billion, six hundred forty-one million, five hundred fifty-three thousand, nine hundred twenty-six".