78847270988349 has 4 divisors (see below), whose sum is σ = 105129694651136. Its totient is φ = 52564847325564.

The previous prime is 78847270988293. The next prime is 78847270988399. The reversal of 78847270988349 is 94388907274887.

78847270988349 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 78847270988349 - 2²⁴ = 78847254211133 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 (78847270988399) 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, 13141211831389 + ... + 13141211831394.

It is an arithmetic number, because the mean of its divisors is an integer number (26282423662784).

Almost surely, 2^{78847270988349} is an apocalyptic number.

It is an amenable number.

78847270988349 is a deficient number, since it is larger than the sum of its proper divisors (26282423662787).

78847270988349 is a wasteful number, since it uses less digits than its factorization.

78847270988349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26282423662786.

The product of its (nonzero) digits is 10924720128, while the sum is 84.

The spelling of 78847270988349 in words is "seventy-eight trillion, eight hundred forty-seven billion, two hundred seventy million, nine hundred eighty-eight thousand, three hundred forty-nine".