55553765565 has 8 divisors (see below), whose sum is σ = 88886024928. Its totient is φ = 29628674960.

The previous prime is 55553765563. The next prime is 55553765633. The reversal of 55553765565 is 56556735555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55553765565 - 2¹ = 55553765563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55553765563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851792171 + ... + 1851792200.

It is an arithmetic number, because the mean of its divisors is an integer number (11110753116).

Almost surely, 2^55553765565 is an apocalyptic number.

It is an amenable number.

55553765565 is a deficient number, since it is larger than the sum of its proper divisors (33332259363).

55553765565 is a wasteful number, since it uses less digits than its factorization.

55553765565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703584379.

The product of its digits is 59062500, while the sum is 57.

The spelling of 55553765565 in words is "fifty-five billion, five hundred fifty-three million, seven hundred sixty-five thousand, five hundred sixty-five".