78480811 has 8 divisors (see below), whose sum is σ = 84844880. Its totient is φ = 72340128.

The previous prime is 78480803. The next prime is 78480821. The reversal of 78480811 is 11808487.

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 78480811 - 2³ = 78480803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (78480821) 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, 55116 + ... + 56521.

It is an arithmetic number, because the mean of its divisors is an integer number (10605610).

Almost surely, 2^78480811 is an apocalyptic number.

78480811 is a deficient number, since it is larger than the sum of its proper divisors (6364069).

78480811 is a wasteful number, since it uses less digits than its factorization.

78480811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111693.

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 78480811 is about 8858.9396092309. The cubic root of 78480811 is about 428.1419940401.

The spelling of 78480811 in words is "seventy-eight million, four hundred eighty thousand, eight hundred eleven".