78180570135601 has 16 divisors (see below), whose sum is σ = 82564163095680. Its totient is φ = 73879047475200.

The previous prime is 78180570135581. The next prime is 78180570135607. The reversal of 78180570135601 is 10653107508187.

It is a cyclic number.

It is not a de Polignac number, because 78180570135601 - 2¹¹ = 78180570133553 is a prime.

It is a super-2 number, since 2×78180570135601² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78180570135607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109604815 + ... + 110315803.

It is an arithmetic number, because the mean of its divisors is an integer number (5160260193480).

Almost surely, 2^{78180570135601} is an apocalyptic number.

It is an amenable number.

78180570135601 is a deficient number, since it is larger than the sum of its proper divisors (4383592960079).

78180570135601 is a wasteful number, since it uses less digits than its factorization.

78180570135601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768696.

The product of its (nonzero) digits is 1411200, while the sum is 52.

The spelling of 78180570135601 in words is "seventy-eight trillion, one hundred eighty billion, five hundred seventy million, one hundred thirty-five thousand, six hundred one".