13655520645 has 16 divisors (see below), whose sum is σ = 23529512832. Its totient is φ = 6722717760.

The previous prime is 13655520631. The next prime is 13655520653. The reversal of 13655520645 is 54602555631.

It is not a de Polignac number, because 13655520645 - 2⁷ = 13655520517 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13655520597 and 13655520606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35013961 + ... + 35014350.

It is an arithmetic number, because the mean of its divisors is an integer number (1470594552).

Almost surely, 2^13655520645 is an apocalyptic number.

13655520645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13655520645 is a deficient number, since it is larger than the sum of its proper divisors (9873992187).

13655520645 is a wasteful number, since it uses less digits than its factorization.

13655520645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70028332.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 13655520645 in words is "thirteen billion, six hundred fifty-five million, five hundred twenty thousand, six hundred forty-five".