8555780078427 has 8 divisors (see below), whose sum is σ = 11407859317840. Its totient is φ = 5703777112320.

The previous prime is 8555780078399. The next prime is 8555780078431. The reversal of 8555780078427 is 7248700875558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8555780078427 - 2¹⁴ = 8555780062043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8555780078477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18806074 + ... + 19255647.

It is an arithmetic number, because the mean of its divisors is an integer number (1425982414730).

Almost surely, 2^{8555780078427} is an apocalyptic number.

8555780078427 is a deficient number, since it is larger than the sum of its proper divisors (2852079239413).

8555780078427 is a wasteful number, since it uses less digits than its factorization.

8555780078427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38136653.

The product of its (nonzero) digits is 175616000, while the sum is 66.

The spelling of 8555780078427 in words is "eight trillion, five hundred fifty-five billion, seven hundred eighty million, seventy-eight thousand, four hundred twenty-seven".