78115103 has 8 divisors (see below), whose sum is σ = 87520080. Its totient is φ = 69094080.

The previous prime is 78115091. The next prime is 78115111. The reversal of 78115103 is 30151187.

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

It is not a de Polignac number, because 78115103 - 2⁴ = 78115087 is a prime.

It is a super-2 number, since 2×78115103² = 12203938633401218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78115603) 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, 95558 + ... + 96371.

It is an arithmetic number, because the mean of its divisors is an integer number (10940010).

Almost surely, 2^78115103 is an apocalyptic number.

78115103 is a deficient number, since it is larger than the sum of its proper divisors (9404977).

78115103 is a wasteful number, since it uses less digits than its factorization.

78115103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191977.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 78115103 is about 8838.2748882347. The cubic root of 78115103 is about 427.4759340328.

The spelling of 78115103 in words is "seventy-eight million, one hundred fifteen thousand, one hundred three".