78372645468683 has 2 divisors, whose sum is σ = 78372645468684. Its totient is φ = 78372645468682.

The previous prime is 78372645468599. The next prime is 78372645468749. The reversal of 78372645468683 is 38686454627387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78372645468683 - 2¹⁶ = 78372645403147 is a prime.

It is a super-2 number, since 2×78372645468683² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78372645468083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39186322734341 + 39186322734342.

It is an arithmetic number, because the mean of its divisors is an integer number (39186322734342).

Almost surely, 2^{78372645468683} is an apocalyptic number.

78372645468683 is a deficient number, since it is larger than the sum of its proper divisors (1).

78372645468683 is an equidigital number, since it uses as much as digits as its factorization.

78372645468683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7803371520, while the sum is 77.

The spelling of 78372645468683 in words is "seventy-eight trillion, three hundred seventy-two billion, six hundred forty-five million, four hundred sixty-eight thousand, six hundred eighty-three".