78500043 has 16 divisors (see below), whose sum is σ = 116576640. Its totient is φ = 52207272.

The previous prime is 78500027. The next prime is 78500053. The reversal of 78500043 is 34000587.

It is not a de Polignac number, because 78500043 - 2⁴ = 78500027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (78500003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8680 + ... + 15242.

It is an arithmetic number, because the mean of its divisors is an integer number (7286040).

Almost surely, 2^78500043 is an apocalyptic number.

78500043 is a deficient number, since it is larger than the sum of its proper divisors (38076597).

78500043 is a wasteful number, since it uses less digits than its factorization.

78500043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015 (or 7009 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 78500043 is about 8860.0249999647. The cubic root of 78500043 is about 428.1769637532.

The spelling of 78500043 in words is "seventy-eight million, five hundred thousand, forty-three".