78501995 has 16 divisors (see below), whose sum is σ = 110672352. Its totient is φ = 52700160.

The previous prime is 78501989. The next prime is 78502033. The reversal of 78501995 is 59910587.

It is a happy number.

It is not a de Polignac number, because 78501995 - 2⁴ = 78501979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54182 + ... + 55611.

It is an arithmetic number, because the mean of its divisors is an integer number (6917022).

Almost surely, 2^78501995 is an apocalyptic number.

78501995 is a deficient number, since it is larger than the sum of its proper divisors (32170357).

78501995 is a wasteful number, since it uses less digits than its factorization.

78501995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109822.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 78501995 is about 8860.1351569827. The cubic root of 78501995 is about 428.1805127725.

The spelling of 78501995 in words is "seventy-eight million, five hundred one thousand, nine hundred ninety-five".