55381091465 has 16 divisors (see below), whose sum is σ = 77567196672. Its totient is φ = 37167612864.

The previous prime is 55381091459. The next prime is 55381091501. The reversal of 55381091465 is 56419018355.

It is a cyclic number.

It is not a de Polignac number, because 55381091465 - 2⁶ = 55381091401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16831514 + ... + 16834803.

It is an arithmetic number, because the mean of its divisors is an integer number (4847949792).

Almost surely, 2^55381091465 is an apocalyptic number.

It is an amenable number.

55381091465 is a deficient number, since it is larger than the sum of its proper divisors (22186105207).

55381091465 is a wasteful number, since it uses less digits than its factorization.

55381091465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33666376.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 55381091465 in words is "fifty-five billion, three hundred eighty-one million, ninety-one thousand, four hundred sixty-five".