78041911 has 8 divisors (see below), whose sum is σ = 84800000. Its totient is φ = 71548920.

The previous prime is 78041903. The next prime is 78041923. The reversal of 78041911 is 11914087.

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 78041911 - 2³ = 78041903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78048911) 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, 65661 + ... + 66838.

It is an arithmetic number, because the mean of its divisors is an integer number (10600000).

Almost surely, 2^78041911 is an apocalyptic number.

78041911 is a deficient number, since it is larger than the sum of its proper divisors (6758089).

78041911 is a wasteful number, since it uses less digits than its factorization.

78041911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132549.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 78041911 is about 8834.1332908215. The cubic root of 78041911 is about 427.3423807060.

Adding to 78041911 its reverse (11914087), we get a palindrome (89955998).

The spelling of 78041911 in words is "seventy-eight million, forty-one thousand, nine hundred eleven".