20525534130361 has 64 divisors (see below), whose sum is σ = 24376503674880. Its totient is φ = 17100521349120.

The previous prime is 20525534130337. The next prime is 20525534130401. The reversal of 20525534130361 is 16303143552502.

It is a cyclic number.

It is not a de Polignac number, because 20525534130361 - 2¹³ = 20525534122169 is a prime.

It is a super-2 number, since 2×20525534130361² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20525534139361) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2168109150 + ... + 2168118616.

It is an arithmetic number, because the mean of its divisors is an integer number (380882869920).

Almost surely, 2^{20525534130361} is an apocalyptic number.

It is an amenable number.

20525534130361 is a deficient number, since it is larger than the sum of its proper divisors (3850969544519).

20525534130361 is a wasteful number, since it uses less digits than its factorization.

20525534130361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11006.

The product of its (nonzero) digits is 324000, while the sum is 40.

Adding to 20525534130361 its reverse (16303143552502), we get a palindrome (36828677682863).

The spelling of 20525534130361 in words is "twenty trillion, five hundred twenty-five billion, five hundred thirty-four million, one hundred thirty thousand, three hundred sixty-one".