55471741920 has 960 divisors, whose sum is σ = 232363676160. Its totient is φ = 12201725952.

The previous prime is 55471741909. The next prime is 55471741991. The reversal of 55471741920 is 2914717455.

55471741920 is a `hidden beast` number, since 5 + 547 + 1 + 74 + 19 + 20 = 666.

It is a super-2 number, since 2×55471741920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 399077211 + ... + 399077349.

It is an arithmetic number, because the mean of its divisors is an integer number (242045496).

Almost surely, 2^55471741920 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 55471741920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116181838080).

55471741920 is an abundant number, since it is smaller than the sum of its proper divisors (176891934240).

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

55471741920 is a wasteful number, since it uses less digits than its factorization.

55471741920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 55471741920 in words is "fifty-five billion, four hundred seventy-one million, seven hundred forty-one thousand, nine hundred twenty".