78533060511 has 4 divisors (see below), whose sum is σ = 104710747352. Its totient is φ = 52355373672.

The previous prime is 78533060497. The next prime is 78533060531. The reversal of 78533060511 is 11506033587.

It is a happy number.

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

It is not a de Polignac number, because 78533060511 - 2⁵ = 78533060479 is a prime.

It is a super-2 number, since 2×78533060511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78533060511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78533060531) 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, 13088843416 + ... + 13088843421.

It is an arithmetic number, because the mean of its divisors is an integer number (26177686838).

Almost surely, 2^78533060511 is an apocalyptic number.

78533060511 is a deficient number, since it is larger than the sum of its proper divisors (26177686841).

78533060511 is a wasteful number, since it uses less digits than its factorization.

78533060511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26177686840.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 78533060511 in words is "seventy-eight billion, five hundred thirty-three million, sixty thousand, five hundred eleven".