78327123107 has 8 divisors (see below), whose sum is σ = 79475149152. Its totient is φ = 77180342400.

The previous prime is 78327123103. The next prime is 78327123151. The reversal of 78327123107 is 70132172387.

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 78327123107 - 2² = 78327123103 is a prime.

It is a super-2 number, since 2×78327123107² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78327123103) 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, 184244 + ... + 436577.

It is an arithmetic number, because the mean of its divisors is an integer number (9934393644).

Almost surely, 2^78327123107 is an apocalyptic number.

78327123107 is a deficient number, since it is larger than the sum of its proper divisors (1148026045).

78327123107 is a wasteful number, since it uses less digits than its factorization.

78327123107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622669.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 78327123107 in words is "seventy-eight billion, three hundred twenty-seven million, one hundred twenty-three thousand, one hundred seven".