78897884349 has 8 divisors (see below), whose sum is σ = 105211100512. Its totient is φ = 52591628880.

The previous prime is 78897884327. The next prime is 78897884371. The reversal of 78897884349 is 94348879887.

It is an interprime number because it is at equal distance from previous prime (78897884327) and next prime (78897884371).

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

It is not a de Polignac number, because 78897884349 - 2¹³ = 78897876157 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 (78897880349) 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, 1713667 + ... + 1759104.

It is an arithmetic number, because the mean of its divisors is an integer number (13151387564).

Almost surely, 2^78897884349 is an apocalyptic number.

It is an amenable number.

78897884349 is a deficient number, since it is larger than the sum of its proper divisors (26313216163).

78897884349 is a wasteful number, since it uses less digits than its factorization.

78897884349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480347.

The product of its digits is 780337152, while the sum is 75.

The spelling of 78897884349 in words is "seventy-eight billion, eight hundred ninety-seven million, eight hundred eighty-four thousand, three hundred forty-nine".