20105245251262 has 12 divisors (see below), whose sum is σ = 31828663882296. Its totient is φ = 9523537223940.

The previous prime is 20105245251199. The next prime is 20105245251317. The reversal of 20105245251262 is 26215254250102.

It is a super-2 number, since 2×20105245251262² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13923299314 + ... + 13923300757.

It is an arithmetic number, because the mean of its divisors is an integer number (2652388656858).

Almost surely, 2^{20105245251262} is an apocalyptic number.

20105245251262 is a deficient number, since it is larger than the sum of its proper divisors (11723418631034).

20105245251262 is a wasteful number, since it uses less digits than its factorization.

20105245251262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27846600111 (or 27846600092 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 20105245251262 in words is "twenty trillion, one hundred five billion, two hundred forty-five million, two hundred fifty-one thousand, two hundred sixty-two".