43557923052 has 72 divisors (see below), whose sum is σ = 129893184512. Its totient is φ = 12043663200.

The previous prime is 43557923027. The next prime is 43557923053. The reversal of 43557923052 is 25032975534.

43557923052 is a `hidden beast` number, since 4 + 3 + 5 + 579 + 23 + 0 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 43557922989 and 43557923007.

It is not an unprimeable number, because it can be changed into a prime (43557923053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2780074 + ... + 2795697.

Almost surely, 2^43557923052 is an apocalyptic number.

43557923052 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

43557923052 is an abundant number, since it is smaller than the sum of its proper divisors (86335261460).

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

43557923052 is a wasteful number, since it uses less digits than its factorization.

43557923052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575819 (or 5575814 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The spelling of 43557923052 in words is "forty-three billion, five hundred fifty-seven million, nine hundred twenty-three thousand, fifty-two".