2626226602661 has 4 divisors (see below), whose sum is σ = 2626445997024. Its totient is φ = 2626007208300.

The previous prime is 2626226602639. The next prime is 2626226602669. The reversal of 2626226602661 is 1662066226262.

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-2626226602661 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 (2626226602669) 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, 109679225 + ... + 109703166.

It is an arithmetic number, because the mean of its divisors is an integer number (656611499256).

Almost surely, 2^{2626226602661} is an apocalyptic number.

It is an amenable number.

2626226602661 is a deficient number, since it is larger than the sum of its proper divisors (219394363).

2626226602661 is a wasteful number, since it uses less digits than its factorization.

2626226602661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219394362.

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 2626226602661 in words is "two trillion, six hundred twenty-six billion, two hundred twenty-six million, six hundred two thousand, six hundred sixty-one".