43551155560 has 192 divisors, whose sum is σ = 114714455040. Its totient is φ = 14753280000.

The previous prime is 43551155551. The next prime is 43551155563. The reversal of 43551155560 is 6555115534.

It is a happy number.

43551155560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43551155560² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (43551155563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12841465 + ... + 12844855.

It is an arithmetic number, because the mean of its divisors is an integer number (597471120).

Almost surely, 2^43551155560 is an apocalyptic number.

43551155560 is a gapful number since it is divisible by the number (40) 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 43551155560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57357227520).

43551155560 is an abundant number, since it is smaller than the sum of its proper divisors (71163299480).

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

43551155560 is a wasteful number, since it uses less digits than its factorization.

43551155560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 43551155560 in words is "forty-three billion, five hundred fifty-one million, one hundred fifty-five thousand, five hundred sixty".