78837580499 has 2 divisors, whose sum is σ = 78837580500. Its totient is φ = 78837580498.

The previous prime is 78837580433. The next prime is 78837580519. The reversal of 78837580499 is 99408573887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78837580499 - 2¹² = 78837576403 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (78837580399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39418790249 + 39418790250.

It is an arithmetic number, because the mean of its divisors is an integer number (39418790250).

Almost surely, 2^78837580499 is an apocalyptic number.

78837580499 is a deficient number, since it is larger than the sum of its proper divisors (1).

78837580499 is an equidigital number, since it uses as much as digits as its factorization.

78837580499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 68.

The spelling of 78837580499 in words is "seventy-eight billion, eight hundred thirty-seven million, five hundred eighty thousand, four hundred ninety-nine".