55374401628 has 288 divisors, whose sum is σ = 179108826624. Its totient is φ = 14567309568.

The previous prime is 55374401627. The next prime is 55374401653. The reversal of 55374401628 is 82610447355.

55374401628 is a `hidden beast` number, since 553 + 74 + 4 + 0 + 1 + 6 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55374401627) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66957751 + ... + 66958577.

It is an arithmetic number, because the mean of its divisors is an integer number (621905648).

Almost surely, 2^55374401628 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 55374401628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89554413312).

55374401628 is an abundant number, since it is smaller than the sum of its proper divisors (123734424996).

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

55374401628 is a wasteful number, since it uses less digits than its factorization.

55374401628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 55374401628 in words is "fifty-five billion, three hundred seventy-four million, four hundred one thousand, six hundred twenty-eight".