78620673398 has 16 divisors (see below), whose sum is σ = 126578654640. Its totient is φ = 36491141376.

The previous prime is 78620673377. The next prime is 78620673403. The reversal of 78620673398 is 89337602687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15835688 + ... + 15840651.

It is an arithmetic number, because the mean of its divisors is an integer number (7911165915).

Almost surely, 2^78620673398 is an apocalyptic number.

78620673398 is a deficient number, since it is larger than the sum of its proper divisors (47957981242).

78620673398 is a wasteful number, since it uses less digits than its factorization.

78620673398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31676431.

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 78620673398 in words is "seventy-eight billion, six hundred twenty million, six hundred seventy-three thousand, three hundred ninety-eight".