136621533156 has 48 divisors (see below), whose sum is σ = 329729382528. Its totient is φ = 43998393600.

The previous prime is 136621533143. The next prime is 136621533173. The reversal of 136621533156 is 651335126631.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1297315 + ... + 1398666.

It is an arithmetic number, because the mean of its divisors is an integer number (6869362136).

Almost surely, 2^136621533156 is an apocalyptic number.

It is an amenable number.

136621533156 is an abundant number, since it is smaller than the sum of its proper divisors (193107849372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136621533156 is a wasteful number, since it uses less digits than its factorization.

136621533156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696132 (or 2696130 counting only the distinct ones).

The product of its digits is 291600, while the sum is 42.

Adding to 136621533156 its reverse (651335126631), we get a palindrome (787956659787).

The spelling of 136621533156 in words is "one hundred thirty-six billion, six hundred twenty-one million, five hundred thirty-three thousand, one hundred fifty-six".