2163520660465 has 8 divisors (see below), whose sum is σ = 2596593669120. Its totient is φ = 1730570610672.

The previous prime is 2163520660453. The next prime is 2163520660487. The reversal of 2163520660465 is 5640660253612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2163520660465 - 2¹¹ = 2163520658417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30700999 + ... + 30771388.

It is an arithmetic number, because the mean of its divisors is an integer number (324574208640).

Almost surely, 2^{2163520660465} is an apocalyptic number.

It is an amenable number.

2163520660465 is a deficient number, since it is larger than the sum of its proper divisors (433073008655).

2163520660465 is an equidigital number, since it uses as much as digits as its factorization.

2163520660465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61479431.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 2163520660465 in words is "two trillion, one hundred sixty-three billion, five hundred twenty million, six hundred sixty thousand, four hundred sixty-five".