13640542853 has 4 divisors (see below), whose sum is σ = 15589191840. Its totient is φ = 11691893868.

The previous prime is 13640542837. The next prime is 13640542873. The reversal of 13640542853 is 35824504631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13640542853 - 2⁴ = 13640542837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13640542853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13640542813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974324483 + ... + 974324496.

It is an arithmetic number, because the mean of its divisors is an integer number (3897297960).

Almost surely, 2^13640542853 is an apocalyptic number.

It is an amenable number.

13640542853 is a deficient number, since it is larger than the sum of its proper divisors (1948648987).

13640542853 is an equidigital number, since it uses as much as digits as its factorization.

13640542853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948648986.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 13640542853 in words is "thirteen billion, six hundred forty million, five hundred forty-two thousand, eight hundred fifty-three".