55405673928 has 192 divisors, whose sum is σ = 165110400000. Its totient is φ = 16645495680.

The previous prime is 55405673927. The next prime is 55405674031. The reversal of 55405673928 is 82937650455.

55405673928 is a `hidden beast` number, since 5 + 5 + 40 + 567 + 39 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (55405673927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66037333 + ... + 66038171.

It is an arithmetic number, because the mean of its divisors is an integer number (859950000).

Almost surely, 2^55405673928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55405673928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82555200000).

55405673928 is an abundant number, since it is smaller than the sum of its proper divisors (109704726072).

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

55405673928 is a wasteful number, since it uses less digits than its factorization.

55405673928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 55405673928 in words is "fifty-five billion, four hundred five million, six hundred seventy-three thousand, nine hundred twenty-eight".