78855887458241 has 4 divisors (see below), whose sum is σ = 78856246689792. Its totient is φ = 78855528226692.

The previous prime is 78855887458171. The next prime is 78855887458267. The reversal of 78855887458241 is 14285478855887.

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.

It is a cyclic number.

It is not a de Polignac number, because 78855887458241 - 2¹⁴ = 78855887441857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78855887458841) 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, 179286305 + ... + 179725598.

It is an arithmetic number, because the mean of its divisors is an integer number (19714061672448).

Almost surely, 2^{78855887458241} is an apocalyptic number.

It is an amenable number.

78855887458241 is a deficient number, since it is larger than the sum of its proper divisors (359231551).

78855887458241 is a wasteful number, since it uses less digits than its factorization.

78855887458241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359231550.

The product of its digits is 6422528000, while the sum is 80.

The spelling of 78855887458241 in words is "seventy-eight trillion, eight hundred fifty-five billion, eight hundred eighty-seven million, four hundred fifty-eight thousand, two hundred forty-one".