55917746420 has 12 divisors (see below), whose sum is σ = 117427267524. Its totient is φ = 22367098560.

The previous prime is 55917746419. The next prime is 55917746473. The reversal of 55917746420 is 2464771955.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18528109924 + 37389636496 = 136118^2 + 193364^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1397943641 + ... + 1397943680.

It is an arithmetic number, because the mean of its divisors is an integer number (9785605627).

Almost surely, 2^55917746420 is an apocalyptic number.

It is an amenable number.

55917746420 is an abundant number, since it is smaller than the sum of its proper divisors (61509521104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55917746420 is a wasteful number, since it uses less digits than its factorization.

55917746420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795887330 (or 2795887328 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 55917746420 in words is "fifty-five billion, nine hundred seventeen million, seven hundred forty-six thousand, four hundred twenty".