78106024489 has 4 divisors (see below), whose sum is σ = 78116824324. Its totient is φ = 78095224656.

The previous prime is 78106024471. The next prime is 78106024501. The reversal of 78106024489 is 98442060187.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35291379600 + 42814644889 = 187860^2 + 206917^2 .

It is a cyclic number.

It is not a de Polignac number, because 78106024489 - 2²⁹ = 77569153577 is a prime.

It is a super-2 number, since 2×78106024489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78106024589) 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, 5389062 + ... + 5403535.

It is an arithmetic number, because the mean of its divisors is an integer number (19529206081).

Almost surely, 2^78106024489 is an apocalyptic number.

It is an amenable number.

78106024489 is a deficient number, since it is larger than the sum of its proper divisors (10799835).

78106024489 is a wasteful number, since it uses less digits than its factorization.

78106024489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799834.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 78106024489 in words is "seventy-eight billion, one hundred six million, twenty-four thousand, four hundred eighty-nine".