78575453659 has 2 divisors, whose sum is σ = 78575453660. Its totient is φ = 78575453658.

The previous prime is 78575453617. The next prime is 78575453683. The reversal of 78575453659 is 95635457587.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78575453659 - 2¹⁷ = 78575322587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78575453659.

It is not a weakly prime, because it can be changed into another prime (78575453699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39287726829 + 39287726830.

It is an arithmetic number, because the mean of its divisors is an integer number (39287726830).

Almost surely, 2^78575453659 is an apocalyptic number.

78575453659 is a deficient number, since it is larger than the sum of its proper divisors (1).

78575453659 is an equidigital number, since it uses as much as digits as its factorization.

78575453659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760000, while the sum is 64.

The spelling of 78575453659 in words is "seventy-eight billion, five hundred seventy-five million, four hundred fifty-three thousand, six hundred fifty-nine".