78043423201 has 4 divisors (see below), whose sum is σ = 78044444352. Its totient is φ = 78042402052.

The previous prime is 78043423189. The next prime is 78043423243. The reversal of 78043423201 is 10232434087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78043423201 - 2¹⁵ = 78043390433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78043423301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385765 + ... + 552178.

It is an arithmetic number, because the mean of its divisors is an integer number (19511111088).

Almost surely, 2^78043423201 is an apocalyptic number.

It is an amenable number.

78043423201 is a deficient number, since it is larger than the sum of its proper divisors (1021151).

78043423201 is an equidigital number, since it uses as much as digits as its factorization.

78043423201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021150.

The product of its (nonzero) digits is 32256, while the sum is 34.

Adding to 78043423201 its reverse (10232434087), we get a palindrome (88275857288).

The spelling of 78043423201 in words is "seventy-eight billion, forty-three million, four hundred twenty-three thousand, two hundred one".