78042578701 has 4 divisors (see below), whose sum is σ = 78092005600. Its totient is φ = 77993151804.

The previous prime is 78042578693. The next prime is 78042578707. The reversal of 78042578701 is 10787524087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10787524087 = 2749 ⋅3924163.

It is a cyclic number.

It is not a de Polignac number, because 78042578701 - 2³ = 78042578693 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 (78042578707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24711081 + ... + 24714238.

It is an arithmetic number, because the mean of its divisors is an integer number (19523001400).

Almost surely, 2^78042578701 is an apocalyptic number.

It is an amenable number.

78042578701 is a deficient number, since it is larger than the sum of its proper divisors (49426899).

78042578701 is a wasteful number, since it uses less digits than its factorization.

78042578701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49426898.

The product of its (nonzero) digits is 878080, while the sum is 49.

The spelling of 78042578701 in words is "seventy-eight billion, forty-two million, five hundred seventy-eight thousand, seven hundred one".