43563537402 has 128 divisors (see below), whose sum is σ = 114598748160. Its totient is φ = 10695706560.

The previous prime is 43563537361. The next prime is 43563537439. The reversal of 43563537402 is 20473536534.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4094013 + ... + 4104639.

It is an arithmetic number, because the mean of its divisors is an integer number (895302720).

Almost surely, 2^43563537402 is an apocalyptic number.

43563537402 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 43563537402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57299374080).

43563537402 is an abundant number, since it is smaller than the sum of its proper divisors (71035210758).

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

43563537402 is a wasteful number, since it uses less digits than its factorization.

43563537402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11136.

The product of its (nonzero) digits is 907200, while the sum is 42.

The spelling of 43563537402 in words is "forty-three billion, five hundred sixty-three million, five hundred thirty-seven thousand, four hundred two".