55673315551 has 16 divisors (see below), whose sum is σ = 66487868928. Its totient is φ = 45579996000.

The previous prime is 55673315539. The next prime is 55673315561. The reversal of 55673315551 is 15551337655.

It is a happy number.

It is not a de Polignac number, because 55673315551 - 2⁹ = 55673315039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55673315561) 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, 133785 + ... + 359506.

It is an arithmetic number, because the mean of its divisors is an integer number (4155491808).

Almost surely, 2^55673315551 is an apocalyptic number.

55673315551 is a deficient number, since it is larger than the sum of its proper divisors (10814553377).

55673315551 is a wasteful number, since it uses less digits than its factorization.

55673315551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494022.

The product of its digits is 1181250, while the sum is 46.

The spelling of 55673315551 in words is "fifty-five billion, six hundred seventy-three million, three hundred fifteen thousand, five hundred fifty-one".