3620324560261 has 4 divisors (see below), whose sum is σ = 3626687169900. Its totient is φ = 3613961950624.

The previous prime is 3620324560247. The next prime is 3620324560291. The reversal of 3620324560261 is 1620654230263.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1020845516161 + 2599479044100 = 1010369^2 + 1612290^2 .

It is a cyclic number.

It is not a de Polignac number, because 3620324560261 - 2⁹ = 3620324559749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620324560241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3181303966 + ... + 3181305103.

It is an arithmetic number, because the mean of its divisors is an integer number (906671792475).

Almost surely, 2^{3620324560261} is an apocalyptic number.

It is an amenable number.

3620324560261 is a deficient number, since it is larger than the sum of its proper divisors (6362609639).

3620324560261 is an equidigital number, since it uses as much as digits as its factorization.

3620324560261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6362609638.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 3620324560261 in words is "three trillion, six hundred twenty billion, three hundred twenty-four million, five hundred sixty thousand, two hundred sixty-one".