77232727236013 has 4 divisors (see below), whose sum is σ = 79895924726940. Its totient is φ = 74569529745088.

The previous prime is 77232727236001. The next prime is 77232727236053. The reversal of 77232727236013 is 31063272723277.

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 17033796348804 + 60198930887209 = 4127202^2 + 7758797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77232727236013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77232727236053) 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, 1331598745420 + ... + 1331598745477.

It is an arithmetic number, because the mean of its divisors is an integer number (19973981181735).

Almost surely, 2^{77232727236013} is an apocalyptic number.

It is an amenable number.

77232727236013 is a deficient number, since it is larger than the sum of its proper divisors (2663197490927).

77232727236013 is a wasteful number, since it uses less digits than its factorization.

77232727236013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663197490926.

The product of its (nonzero) digits is 6223392, while the sum is 52.

The spelling of 77232727236013 in words is "seventy-seven trillion, two hundred thirty-two billion, seven hundred twenty-seven million, two hundred thirty-six thousand, thirteen".