43455315420 has 288 divisors, whose sum is σ = 152519238144. Its totient is φ = 9910771200.

The previous prime is 43455315341. The next prime is 43455315427. The reversal of 43455315420 is 2451355434.

43455315420 is a `hidden beast` number, since 4 + 34 + 55 + 31 + 542 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43455315427) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2770119 + ... + 2785761.

It is an arithmetic number, because the mean of its divisors is an integer number (529580688).

Almost surely, 2^43455315420 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 43455315420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76259619072).

43455315420 is an abundant number, since it is smaller than the sum of its proper divisors (109063922724).

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

43455315420 is a wasteful number, since it uses less digits than its factorization.

43455315420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15753 (or 15748 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 43455315420 in words is "forty-three billion, four hundred fifty-five million, three hundred fifteen thousand, four hundred twenty".