55645731698 has 8 divisors (see below), whose sum is σ = 85043476908. Its totient is φ = 27297906064.

The previous prime is 55645731679. The next prime is 55645731719. The reversal of 55645731698 is 89613754655.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55026368929 + 619362769 = 234577^2 + 24887^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262479761 + ... + 262479972.

Almost surely, 2^55645731698 is an apocalyptic number.

55645731698 is a deficient number, since it is larger than the sum of its proper divisors (29397745210).

55645731698 is a wasteful number, since it uses less digits than its factorization.

55645731698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524959788.

The product of its digits is 27216000, while the sum is 59.

The spelling of 55645731698 in words is "fifty-five billion, six hundred forty-five million, seven hundred thirty-one thousand, six hundred ninety-eight".