78011518 has 16 divisors (see below), whose sum is σ = 127179360. Its totient is φ = 35673696.

The previous prime is 78011489. The next prime is 78011519. The reversal of 78011518 is 81511087.

It is a self number, because there is not a number n which added to its sum of digits gives 78011518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78011519) 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, 10930 + ... + 16597.

It is an arithmetic number, because the mean of its divisors is an integer number (7948710).

Almost surely, 2^78011518 is an apocalyptic number.

78011518 is a deficient number, since it is larger than the sum of its proper divisors (49167842).

78011518 is a wasteful number, since it uses less digits than its factorization.

78011518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27651.

The product of its (nonzero) digits is 2240, while the sum is 31.

The square root of 78011518 is about 8832.4129206010. The cubic root of 78011518 is about 427.2868981102.

The spelling of 78011518 in words is "seventy-eight million, eleven thousand, five hundred eighteen".