78841548417 has 8 divisors (see below), whose sum is σ = 105233073696. Its totient is φ = 52505527712.

The previous prime is 78841548377. The next prime is 78841548473. The reversal of 78841548417 is 71484514887.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78841548417 - 2¹¹ = 78841546369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78841548497) 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, 13872828 + ... + 13878509.

It is an arithmetic number, because the mean of its divisors is an integer number (13154134212).

Almost surely, 2^78841548417 is an apocalyptic number.

It is an amenable number.

78841548417 is a deficient number, since it is larger than the sum of its proper divisors (26391525279).

78841548417 is a wasteful number, since it uses less digits than its factorization.

78841548417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27752287.

The product of its digits is 8028160, while the sum is 57.

The spelling of 78841548417 in words is "seventy-eight billion, eight hundred forty-one million, five hundred forty-eight thousand, four hundred seventeen".