6631652538 has 24 divisors (see below), whose sum is σ = 16421235168. Its totient is φ = 1894757832.

The previous prime is 6631652509. The next prime is 6631652549. The reversal of 6631652538 is 8352561366.

6631652538 is a `hidden beast` number, since 6 + 63 + 1 + 6 + 52 + 538 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6631652493 and 6631652502.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26315956 + ... + 26316207.

It is an arithmetic number, because the mean of its divisors is an integer number (684218132).

Almost surely, 2^6631652538 is an apocalyptic number.

6631652538 is an abundant number, since it is smaller than the sum of its proper divisors (9789582630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6631652538 is a wasteful number, since it uses less digits than its factorization.

6631652538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52632178 (or 52632175 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 6631652538 is about 81434.9589427047. The cubic root of 6631652538 is about 1878.7713167117.

The spelling of 6631652538 in words is "six billion, six hundred thirty-one million, six hundred fifty-two thousand, five hundred thirty-eight".