78912101 has 8 divisors (see below), whose sum is σ = 80599008. Its totient is φ = 77238000.

The previous prime is 78912077. The next prime is 78912109. The reversal of 78912101 is 10121987.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78912101 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 (78912109) 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, 9806 + ... + 15936.

It is an arithmetic number, because the mean of its divisors is an integer number (10074876).

Almost surely, 2^78912101 is an apocalyptic number.

It is an amenable number.

78912101 is a deficient number, since it is larger than the sum of its proper divisors (1686907).

78912101 is a wasteful number, since it uses less digits than its factorization.

78912101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6403.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 78912101 is about 8883.2483360537. The cubic root of 78912101 is about 428.9248441578.

The spelling of 78912101 in words is "seventy-eight million, nine hundred twelve thousand, one hundred one".