43587749640 has 64 divisors (see below), whose sum is σ = 134981429760. Its totient is φ = 11248450560.

The previous prime is 43587749617. The next prime is 43587749651. The reversal of 43587749640 is 4694778534.

It is an unprimeable number.

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, 5854849 + ... + 5862288.

It is an arithmetic number, because the mean of its divisors is an integer number (2109084840).

Almost surely, 2^43587749640 is an apocalyptic number.

43587749640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43587749640 is an abundant number, since it is smaller than the sum of its proper divisors (91393680120).

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

43587749640 is a wasteful number, since it uses less digits than its factorization.

43587749640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11717182 (or 11717178 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 57.

The spelling of 43587749640 in words is "forty-three billion, five hundred eighty-seven million, seven hundred forty-nine thousand, six hundred forty".