78019555238 has 8 divisors (see below), whose sum is σ = 117033556080. Its totient is φ = 39008369880.

The previous prime is 78019555231. The next prime is 78019555241. The reversal of 78019555238 is 83255591087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 78019555238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78019555231) 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, 633173 + ... + 746288.

It is an arithmetic number, because the mean of its divisors is an integer number (14629194510).

Almost surely, 2^78019555238 is an apocalyptic number.

78019555238 is a deficient number, since it is larger than the sum of its proper divisors (39014000842).

78019555238 is a wasteful number, since it uses less digits than its factorization.

78019555238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407742.

The product of its (nonzero) digits is 3024000, while the sum is 53.

The spelling of 78019555238 in words is "seventy-eight billion, nineteen million, five hundred fifty-five thousand, two hundred thirty-eight".