55678519428 has 48 divisors (see below), whose sum is σ = 148529023104. Its totient is φ = 15902472960.

The previous prime is 55678519409. The next prime is 55678519483. The reversal of 55678519428 is 82491587655.

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, 121488 + ... + 355128.

It is an arithmetic number, because the mean of its divisors is an integer number (3094354648).

Almost surely, 2^55678519428 is an apocalyptic number.

It is an amenable number.

55678519428 is an abundant number, since it is smaller than the sum of its proper divisors (92850503676).

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

55678519428 is a wasteful number, since it uses less digits than its factorization.

55678519428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236492 (or 236490 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 60.

The spelling of 55678519428 in words is "fifty-five billion, six hundred seventy-eight million, five hundred nineteen thousand, four hundred twenty-eight".