78051107 has 4 divisors (see below), whose sum is σ = 82159080. Its totient is φ = 73943136.

The previous prime is 78051101. The next prime is 78051133. The reversal of 78051107 is 70115087.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-78051107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78051107.

It is not an unprimeable number, because it can be changed into a prime (78051101) 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, 2053958 + ... + 2053995.

It is an arithmetic number, because the mean of its divisors is an integer number (20539770).

Almost surely, 2^78051107 is an apocalyptic number.

78051107 is a deficient number, since it is larger than the sum of its proper divisors (4107973).

78051107 is a wasteful number, since it uses less digits than its factorization.

78051107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107972.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 78051107 is about 8834.6537566562. The cubic root of 78051107 is about 427.3591652180.

The spelling of 78051107 in words is "seventy-eight million, fifty-one thousand, one hundred seven".