78214050874509 has 32 divisors (see below), whose sum is σ = 116606505222144. Its totient is φ = 46229577526080.

The previous prime is 78214050874499. The next prime is 78214050874559. The reversal of 78214050874509 is 90547805041287.

It is not a de Polignac number, because 78214050874509 - 2⁹ = 78214050873997 is a prime.

It is a super-2 number, since 2×78214050874509² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78214050874559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133598029 + ... + 134182194.

It is an arithmetic number, because the mean of its divisors is an integer number (3643953288192).

Almost surely, 2^{78214050874509} is an apocalyptic number.

It is an amenable number.

78214050874509 is a deficient number, since it is larger than the sum of its proper divisors (38392454347635).

78214050874509 is a wasteful number, since it uses less digits than its factorization.

78214050874509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267780457.

The product of its (nonzero) digits is 22579200, while the sum is 60.

The spelling of 78214050874509 in words is "seventy-eight trillion, two hundred fourteen billion, fifty million, eight hundred seventy-four thousand, five hundred nine".