78152031548845 has 8 divisors (see below), whose sum is σ = 93792424331520. Its totient is φ = 62514967590480.

The previous prime is 78152031548813. The next prime is 78152031548861. The reversal of 78152031548845 is 54884513025187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78152031548845 - 2⁵ = 78152031548813 is a prime.

It is a super-2 number, since 2×78152031548845² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832154425 + ... + 832248334.

It is an arithmetic number, because the mean of its divisors is an integer number (11724053041440).

Almost surely, 2^{78152031548845} is an apocalyptic number.

It is an amenable number.

78152031548845 is a deficient number, since it is larger than the sum of its proper divisors (15640392782675).

78152031548845 is a wasteful number, since it uses less digits than its factorization.

78152031548845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664412155.

The product of its (nonzero) digits is 43008000, while the sum is 61.

The spelling of 78152031548845 in words is "seventy-eight trillion, one hundred fifty-two billion, thirty-one million, five hundred forty-eight thousand, eight hundred forty-five".