78080505 has 8 divisors (see below), whose sum is σ = 124928832. Its totient is φ = 41642928.

The previous prime is 78080503. The next prime is 78080521. The reversal of 78080505 is 50508087.

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

It is not a de Polignac number, because 78080505 - 2¹ = 78080503 is a prime.

It is a super-2 number, since 2×78080505² = 12193130522110050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78080503) 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, 2602669 + ... + 2602698.

It is an arithmetic number, because the mean of its divisors is an integer number (15616104).

Almost surely, 2^78080505 is an apocalyptic number.

It is an amenable number.

78080505 is a deficient number, since it is larger than the sum of its proper divisors (46848327).

78080505 is a wasteful number, since it uses less digits than its factorization.

78080505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205375.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 78080505 is about 8836.3173890484. The cubic root of 78080505 is about 427.4128135185.

The spelling of 78080505 in words is "seventy-eight million, eighty thousand, five hundred five".