2631663121 has 8 divisors (see below), whose sum is σ = 2790707040. Its totient is φ = 2473090368.

The previous prime is 2631663109. The next prime is 2631663137. The reversal of 2631663121 is 1213661362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2631663121 - 2¹¹ = 2631661073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2631663421) 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 7 ways as a sum of consecutive naturals, for example, 106251 + ... + 128656.

It is an arithmetic number, because the mean of its divisors is an integer number (348838380).

Almost surely, 2^2631663121 is an apocalyptic number.

It is an amenable number.

2631663121 is a deficient number, since it is larger than the sum of its proper divisors (159043919).

2631663121 is a wasteful number, since it uses less digits than its factorization.

2631663121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235583.

The product of its digits is 7776, while the sum is 31.

The square root of 2631663121 is about 51299.7380207736. The cubic root of 2631663121 is about 1380.6282795191.

The spelling of 2631663121 in words is "two billion, six hundred thirty-one million, six hundred sixty-three thousand, one hundred twenty-one".