13636145640 has 64 divisors (see below), whose sum is σ = 44055244800. Its totient is φ = 3356589312.

The previous prime is 13636145639. The next prime is 13636145641. The reversal of 13636145640 is 4654163631.

It is an interprime number because it is at equal distance from previous prime (13636145639) and next prime (13636145641).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (13636145641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4369000 + ... + 4372119.

It is an arithmetic number, because the mean of its divisors is an integer number (688363200).

Almost surely, 2^13636145640 is an apocalyptic number.

13636145640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13636145640 is an abundant number, since it is smaller than the sum of its proper divisors (30419099160).

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

13636145640 is a wasteful number, since it uses less digits than its factorization.

13636145640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741146 (or 8741142 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 13636145640 in words is "thirteen billion, six hundred thirty-six million, one hundred forty-five thousand, six hundred forty".