132505355647861 has 16 divisors (see below), whose sum is σ = 154525695408000. Its totient is φ = 113575652129184.

The previous prime is 132505355647859. The next prime is 132505355647883. The reversal of 132505355647861 is 168746553505231.

It is not a de Polignac number, because 132505355647861 - 2¹ = 132505355647859 is a prime.

It is a super-2 number, since 2×132505355647861² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 132505355647861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132505355647961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194201841 + ... + 194882953.

It is an arithmetic number, because the mean of its divisors is an integer number (9657855963000).

Almost surely, 2^{132505355647861} is an apocalyptic number.

It is an amenable number.

132505355647861 is a deficient number, since it is larger than the sum of its proper divisors (22020339760139).

132505355647861 is an frugal number, since it uses more digits than its factorization.

132505355647861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248313 (or 1248299 counting only the distinct ones).

The product of its (nonzero) digits is 90720000, while the sum is 61.

The spelling of 132505355647861 in words is "one hundred thirty-two trillion, five hundred five billion, three hundred fifty-five million, six hundred forty-seven thousand, eight hundred sixty-one".