55553503665 has 96 divisors (see below), whose sum is σ = 100869753600. Its totient is φ = 26069091840.

The previous prime is 55553503631. The next prime is 55553503667. The reversal of 55553503665 is 56630535555.

It is not a de Polignac number, because 55553503665 - 2⁸ = 55553503409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55553503667) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13361767 + ... + 13365923.

It is an arithmetic number, because the mean of its divisors is an integer number (1050726600).

Almost surely, 2^55553503665 is an apocalyptic number.

55553503665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55553503665 is a deficient number, since it is larger than the sum of its proper divisors (45316249935).

55553503665 is a wasteful number, since it uses less digits than its factorization.

55553503665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423 (or 4412 counting only the distinct ones).

The product of its (nonzero) digits is 5062500, while the sum is 48.

The spelling of 55553503665 in words is "fifty-five billion, five hundred fifty-three million, five hundred three thousand, six hundred sixty-five".