2626201646261 has 4 divisors (see below), whose sum is σ = 2626240602624. Its totient is φ = 2626162689900.

The previous prime is 2626201646147. The next prime is 2626201646269. The reversal of 2626201646261 is 1626461026262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2626201646261 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 (2626201646269) 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 3 ways as a sum of consecutive naturals, for example, 19376885 + ... + 19511946.

It is an arithmetic number, because the mean of its divisors is an integer number (656560150656).

Almost surely, 2^{2626201646261} is an apocalyptic number.

It is an amenable number.

2626201646261 is a deficient number, since it is larger than the sum of its proper divisors (38956363).

2626201646261 is an equidigital number, since it uses as much as digits as its factorization.

2626201646261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38956362.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 2626201646261 in words is "two trillion, six hundred twenty-six billion, two hundred one million, six hundred forty-six thousand, two hundred sixty-one".