78135411 has 8 divisors (see below), whose sum is σ = 105946560. Its totient is φ = 51207272.

The previous prime is 78135377. The next prime is 78135419. The reversal of 78135411 is 11453187.

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 78135411 - 2¹⁰ = 78134387 is a prime.

It is a super-2 number, since 2×78135411² = 12210284904277842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78135419) 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, 220545 + ... + 220898.

It is an arithmetic number, because the mean of its divisors is an integer number (13243320).

Almost surely, 2^78135411 is an apocalyptic number.

78135411 is a deficient number, since it is larger than the sum of its proper divisors (27811149).

78135411 is a wasteful number, since it uses less digits than its factorization.

78135411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441505.

The product of its digits is 3360, while the sum is 30.

The square root of 78135411 is about 8839.4236803086. The cubic root of 78135411 is about 427.5129752226.

Adding to 78135411 its reverse (11453187), we get a palindrome (89588598).

The spelling of 78135411 in words is "seventy-eight million, one hundred thirty-five thousand, four hundred eleven".