78041771 has 4 divisors (see below), whose sum is σ = 78209352. Its totient is φ = 77874192.

The previous prime is 78041741. The next prime is 78041839. The reversal of 78041771 is 17714087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78041771 - 2¹⁰ = 78040747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78041731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83090 + ... + 84023.

It is an arithmetic number, because the mean of its divisors is an integer number (19552338).

Almost surely, 2^78041771 is an apocalyptic number.

78041771 is a deficient number, since it is larger than the sum of its proper divisors (167581).

78041771 is a wasteful number, since it uses less digits than its factorization.

78041771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167580.

The product of its (nonzero) digits is 10976, while the sum is 35.

The square root of 78041771 is about 8834.1253670072. The cubic root of 78041771 is about 427.3421251682.

The spelling of 78041771 in words is "seventy-eight million, forty-one thousand, seven hundred seventy-one".