20261176317465 has 64 divisors (see below), whose sum is σ = 33949610956800. Its totient is φ = 10298804465664.

The previous prime is 20261176317409. The next prime is 20261176317467. The reversal of 20261176317465 is 56471367116202.

It is not a de Polignac number, because 20261176317465 - 2⁶ = 20261176317401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20261176317467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 311251641 + ... + 311316729.

It is an arithmetic number, because the mean of its divisors is an integer number (530462671200).

Almost surely, 2^{20261176317465} is an apocalyptic number.

It is an amenable number.

20261176317465 is a deficient number, since it is larger than the sum of its proper divisors (13688434639335).

20261176317465 is a wasteful number, since it uses less digits than its factorization.

20261176317465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68366.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 20261176317465 in words is "twenty trillion, two hundred sixty-one billion, one hundred seventy-six million, three hundred seventeen thousand, four hundred sixty-five".