2220751434661 has 4 divisors (see below), whose sum is σ = 2351383872012. Its totient is φ = 2090118997312.

The previous prime is 2220751434659. The next prime is 2220751434677. The reversal of 2220751434661 is 1664341570222.

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 721767485761 + 1498983948900 = 849569^2 + 1224330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220751434661 - 2¹ = 2220751434659 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 (2220751434641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65316218650 + ... + 65316218683.

It is an arithmetic number, because the mean of its divisors is an integer number (587845968003).

Almost surely, 2^{2220751434661} is an apocalyptic number.

It is an amenable number.

2220751434661 is a deficient number, since it is larger than the sum of its proper divisors (130632437351).

2220751434661 is a wasteful number, since it uses less digits than its factorization.

2220751434661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130632437350.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 2220751434661 in words is "two trillion, two hundred twenty billion, seven hundred fifty-one million, four hundred thirty-four thousand, six hundred sixty-one".