55810540646784 has 1536 divisors, whose sum is σ = 213352071552000. Its totient is φ = 13952706969600.

The previous prime is 55810540646713. The next prime is 55810540646797. The reversal of 55810540646784 is 48764604501855.

55810540646784 is a `hidden beast` number, since 5 + 5 + 8 + 1 + 0 + 540 + 6 + 4 + 6 + 7 + 84 = 666.

It is a super-2 number, since 2×55810540646784² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 58563001252 + ... + 58563002204.

It is an arithmetic number, because the mean of its divisors is an integer number (138901088250).

Almost surely, 2^{55810540646784} is an apocalyptic number.

55810540646784 is a gapful number since it is divisible by the number (54) 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 55810540646784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106676035776000).

55810540646784 is an abundant number, since it is smaller than the sum of its proper divisors (157541530905216).

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

55810540646784 is a wasteful number, since it uses less digits than its factorization.

55810540646784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 129024000, while the sum is 63.

The spelling of 55810540646784 in words is "fifty-five trillion, eight hundred ten billion, five hundred forty million, six hundred forty-six thousand, seven hundred eighty-four".