14545721777138 has 4 divisors (see below), whose sum is σ = 21818582665710. Its totient is φ = 7272860888568.

The previous prime is 14545721777131. The next prime is 14545721777183. The reversal of 14545721777138 is 83177712754541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10531537224289 + 4014184552849 = 3245233^2 + 2003543^2 .

It is not an unprimeable number, because it can be changed into a prime (14545721777131) 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 as a sum of consecutive naturals, namely, 3636430444283 + ... + 3636430444286.

Almost surely, 2^{14545721777138} is an apocalyptic number.

14545721777138 is a deficient number, since it is larger than the sum of its proper divisors (7272860888572).

14545721777138 is an equidigital number, since it uses as much as digits as its factorization.

14545721777138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272860888571.

The product of its digits is 46099200, while the sum is 62.

The spelling of 14545721777138 in words is "fourteen trillion, five hundred forty-five billion, seven hundred twenty-one million, seven hundred seventy-seven thousand, one hundred thirty-eight".