132656136120521 has 6 divisors (see below), whose sum is σ = 143645401834830. Its totient is φ = 122451817957248.

The previous prime is 132656136120503. The next prime is 132656136120593. The reversal of 132656136120521 is 125021631656231.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4295484228025 + 128360651892496 = 2072555^2 + 11329636^2 .

It is not a de Polignac number, because 132656136120521 - 2⁴² = 128258089609417 is a prime.

It is a super-2 number, since 2×132656136120521² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132656136129521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392473775336 + ... + 392473775673.

It is an arithmetic number, because the mean of its divisors is an integer number (23940900305805).

Almost surely, 2^{132656136120521} is an apocalyptic number.

It is an amenable number.

132656136120521 is a deficient number, since it is larger than the sum of its proper divisors (10989265714309).

132656136120521 is an equidigital number, since it uses as much as digits as its factorization.

132656136120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784947551035 (or 784947551022 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

Adding to 132656136120521 its reverse (125021631656231), we get a palindrome (257677767776752).

The spelling of 132656136120521 in words is "one hundred thirty-two trillion, six hundred fifty-six billion, one hundred thirty-six million, one hundred twenty thousand, five hundred twenty-one".