78090576079 has 4 divisors (see below), whose sum is σ = 78165736480. Its totient is φ = 78015415680.

The previous prime is 78090576059. The next prime is 78090576089. The reversal of 78090576079 is 97067509087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97067509087 = 953 ⋅101854679.

It is a cyclic number.

It is not a de Polignac number, because 78090576079 - 2⁷ = 78090575951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78090576029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37578642 + ... + 37580719.

It is an arithmetic number, because the mean of its divisors is an integer number (19541434120).

Almost surely, 2^78090576079 is an apocalyptic number.

78090576079 is a deficient number, since it is larger than the sum of its proper divisors (75160401).

78090576079 is a wasteful number, since it uses less digits than its factorization.

78090576079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75160400.

The product of its (nonzero) digits is 6667920, while the sum is 58.

The spelling of 78090576079 in words is "seventy-eight billion, ninety million, five hundred seventy-six thousand, seventy-nine".