43155728920 has 64 divisors (see below), whose sum is σ = 101351736000. Its totient is φ = 16506935808.

The previous prime is 43155728893. The next prime is 43155728927. The reversal of 43155728920 is 2982755134.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43155728927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6279246 + ... + 6286114.

It is an arithmetic number, because the mean of its divisors is an integer number (1583620875).

Almost surely, 2^43155728920 is an apocalyptic number.

43155728920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43155728920 is an abundant number, since it is smaller than the sum of its proper divisors (58196007080).

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

43155728920 is a wasteful number, since it uses less digits than its factorization.

43155728920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13732 (or 13728 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 43155728920 in words is "forty-three billion, one hundred fifty-five million, seven hundred twenty-eight thousand, nine hundred twenty".