20612065352505 has 128 divisors (see below), whose sum is σ = 37899522017280. Its totient is φ = 9474779381760.

The previous prime is 20612065352477. The next prime is 20612065352533. The reversal of 20612065352505 is 50525356021602.

It is an interprime number because it is at equal distance from previous prime (20612065352477) and next prime (20612065352533).

It is not a de Polignac number, because 20612065352505 - 2⁶ = 20612065352441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 109900089 + ... + 110087481.

It is an arithmetic number, because the mean of its divisors is an integer number (296090015760).

Almost surely, 2^{20612065352505} is an apocalyptic number.

It is an amenable number.

20612065352505 is a deficient number, since it is larger than the sum of its proper divisors (17287456664775).

20612065352505 is a wasteful number, since it uses less digits than its factorization.

20612065352505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187911.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 20612065352505 in words is "twenty trillion, six hundred twelve billion, sixty-five million, three hundred fifty-two thousand, five hundred five".