78115133 has 8 divisors (see below), whose sum is σ = 82511616. Its totient is φ = 73836000.

The previous prime is 78115129. The next prime is 78115151. The reversal of 78115133 is 33151187.

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 78115133 - 2² = 78115129 is a prime.

It is a super-2 number, since 2×78115133² = 12203948007215378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78115096 and 78115105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78115333) 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, 27968 + ... + 30633.

It is an arithmetic number, because the mean of its divisors is an integer number (10313952).

Almost surely, 2^78115133 is an apocalyptic number.

It is an amenable number.

78115133 is a deficient number, since it is larger than the sum of its proper divisors (4396483).

78115133 is a wasteful number, since it uses less digits than its factorization.

78115133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58675.

The product of its digits is 2520, while the sum is 29.

The square root of 78115133 is about 8838.2765853983. The cubic root of 78115133 is about 427.4759887566.

The spelling of 78115133 in words is "seventy-eight million, one hundred fifteen thousand, one hundred thirty-three".