78743419838 has 8 divisors (see below), whose sum is σ = 118644794688. Its totient is φ = 39195154944.

The previous prime is 78743419837. The next prime is 78743419847. The reversal of 78743419838 is 83891434787.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78743419837) 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, 88276931 + ... + 88277822.

It is an arithmetic number, because the mean of its divisors is an integer number (14830599336).

Almost surely, 2^78743419838 is an apocalyptic number.

78743419838 is a deficient number, since it is larger than the sum of its proper divisors (39901374850).

78743419838 is a wasteful number, since it uses less digits than its factorization.

78743419838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176554978.

The product of its digits is 32514048, while the sum is 62.

The spelling of 78743419838 in words is "seventy-eight billion, seven hundred forty-three million, four hundred nineteen thousand, eight hundred thirty-eight".