55877428860 has 384 divisors, whose sum is σ = 186653859840. Its totient is φ = 12334694400.

The previous prime is 55877428819. The next prime is 55877428861. The reversal of 55877428860 is 6882477855.

55877428860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 55877428794 and 55877428803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55877428861) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 116654101 + ... + 116654579.

It is an arithmetic number, because the mean of its divisors is an integer number (486077760).

Almost surely, 2^55877428860 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 55877428860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93326929920).

55877428860 is an abundant number, since it is smaller than the sum of its proper divisors (130776430980).

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

55877428860 is a wasteful number, since it uses less digits than its factorization.

55877428860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 30105600, while the sum is 60.

The spelling of 55877428860 in words is "fifty-five billion, eight hundred seventy-seven million, four hundred twenty-eight thousand, eight hundred sixty".