20126262252065 has 16 divisors (see below), whose sum is σ = 25647626246400. Its totient is φ = 15118600718592.

The previous prime is 20126262252049. The next prime is 20126262252157. The reversal of 20126262252065 is 56025226262102.

It is a cyclic number.

It is not a de Polignac number, because 20126262252065 - 2⁴ = 20126262252049 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937402505 + ... + 937423974.

It is an arithmetic number, because the mean of its divisors is an integer number (1602976640400).

Almost surely, 2^{20126262252065} is an apocalyptic number.

It is an amenable number.

20126262252065 is a deficient number, since it is larger than the sum of its proper divisors (5521363994335).

20126262252065 is a wasteful number, since it uses less digits than its factorization.

20126262252065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874826616.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 20126262252065 in words is "twenty trillion, one hundred twenty-six billion, two hundred sixty-two million, two hundred fifty-two thousand, sixty-five".