55378486800 has 2160 divisors, whose sum is σ = 267977848320. Its totient is φ = 10450944000.

The previous prime is 55378486771. The next prime is 55378486829. The reversal of 55378486800 is 868487355.

55378486800 is a `hidden beast` number, since 5 + 537 + 8 + 48 + 68 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (55378486771) and next prime (55378486829).

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 1350694780 + ... + 1350694820.

Almost surely, 2^55378486800 is an apocalyptic number.

55378486800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55378486800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133988924160).

55378486800 is an abundant number, since it is smaller than the sum of its proper divisors (212599361520).

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

55378486800 is a wasteful number, since it uses less digits than its factorization.

55378486800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 55378486800 in words is "fifty-five billion, three hundred seventy-eight million, four hundred eighty-six thousand, eight hundred".