136440502045251 has 8 divisors (see below), whose sum is σ = 183248557491984. Its totient is φ = 90296390647680.

The previous prime is 136440502045249. The next prime is 136440502045307. The reversal of 136440502045251 is 152540205044631.

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

It is not a de Polignac number, because 136440502045251 - 2¹ = 136440502045249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136440502045151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165986011810 + ... + 165986012631.

It is an arithmetic number, because the mean of its divisors is an integer number (22906069686498).

Almost surely, 2^{136440502045251} is an apocalyptic number.

136440502045251 is a deficient number, since it is larger than the sum of its proper divisors (46808055446733).

136440502045251 is a wasteful number, since it uses less digits than its factorization.

136440502045251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331972024581.

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 136440502045251 its reverse (152540205044631), we get a palindrome (288980707089882).

The spelling of 136440502045251 in words is "one hundred thirty-six trillion, four hundred forty billion, five hundred two million, forty-five thousand, two hundred fifty-one".