20630622261 has 8 divisors (see below), whose sum is σ = 27516644064. Its totient is φ = 13749174320.

The previous prime is 20630622241. The next prime is 20630622329. The reversal of 20630622261 is 16222603602.

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 20630622261 - 2⁶ = 20630622197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630622211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132926 + ... + 1150991.

It is an arithmetic number, because the mean of its divisors is an integer number (3439580508).

Almost surely, 2^20630622261 is an apocalyptic number.

It is an amenable number.

20630622261 is a deficient number, since it is larger than the sum of its proper divisors (6886021803).

20630622261 is a wasteful number, since it uses less digits than its factorization.

20630622261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286931.

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 20630622261 in words is "twenty billion, six hundred thirty million, six hundred twenty-two thousand, two hundred sixty-one".