78896422961121 has 4 divisors (see below), whose sum is σ = 105195230614832. Its totient is φ = 52597615307412.

The previous prime is 78896422961113. The next prime is 78896422961143. The reversal of 78896422961121 is 12116922469887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78896422961121 - 2³ = 78896422961113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78896422961621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13149403826851 + ... + 13149403826856.

It is an arithmetic number, because the mean of its divisors is an integer number (26298807653708).

Almost surely, 2^{78896422961121} is an apocalyptic number.

It is an amenable number.

78896422961121 is a deficient number, since it is larger than the sum of its proper divisors (26298807653711).

78896422961121 is a wasteful number, since it uses less digits than its factorization.

78896422961121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26298807653710.

The product of its digits is 41803776, while the sum is 66.

The spelling of 78896422961121 in words is "seventy-eight trillion, eight hundred ninety-six billion, four hundred twenty-two million, nine hundred sixty-one thousand, one hundred twenty-one".