55867553280 has 800 divisors, whose sum is σ = 249546528000. Its totient is φ = 11605524480.

The previous prime is 55867553251. The next prime is 55867553323. The reversal of 55867553280 is 8235576855.

It is a happy number.

55867553280 is a `hidden beast` number, since 5 + 5 + 8 + 6 + 7 + 553 + 2 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15964971 + ... + 15968469.

It is an arithmetic number, because the mean of its divisors is an integer number (311933160).

Almost surely, 2^55867553280 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 55867553280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124773264000).

55867553280 is an abundant number, since it is smaller than the sum of its proper divisors (193678974720).

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

55867553280 is a wasteful number, since it uses less digits than its factorization.

55867553280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 55867553280 in words is "fifty-five billion, eight hundred sixty-seven million, five hundred fifty-three thousand, two hundred eighty".