78532635154121 has 16 divisors (see below), whose sum is σ = 82825535845440. Its totient is φ = 74255735658240.

The previous prime is 78532635154097. The next prime is 78532635154213. The reversal of 78532635154121 is 12145153623587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78532635154121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78532635144121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69192221 + ... + 70318053.

It is an arithmetic number, because the mean of its divisors is an integer number (5176595990340).

Almost surely, 2^{78532635154121} is an apocalyptic number.

It is an amenable number.

78532635154121 is a deficient number, since it is larger than the sum of its proper divisors (4292900691319).

78532635154121 is a wasteful number, since it uses less digits than its factorization.

78532635154121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132936.

The product of its digits is 6048000, while the sum is 53.

The spelling of 78532635154121 in words is "seventy-eight trillion, five hundred thirty-two billion, six hundred thirty-five million, one hundred fifty-four thousand, one hundred twenty-one".