20410642451265 has 72 divisors (see below), whose sum is σ = 38131463334720. Its totient is φ = 9313947118080.

The previous prime is 20410642451263. The next prime is 20410642451267. The reversal of 20410642451265 is 56215424601402.

It is an interprime number because it is at equal distance from previous prime (20410642451263) and next prime (20410642451267).

It is not a de Polignac number, because 20410642451265 - 2¹ = 20410642451263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20410642451263) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 18931405 + ... + 19980474.

Almost surely, 2^{20410642451265} is an apocalyptic number.

It is an amenable number.

20410642451265 is a deficient number, since it is larger than the sum of its proper divisors (17720820883455).

20410642451265 is a wasteful number, since it uses less digits than its factorization.

20410642451265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38911943 (or 38911915 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 20410642451265 in words is "twenty trillion, four hundred ten billion, six hundred forty-two million, four hundred fifty-one thousand, two hundred sixty-five".