20011631768 has 32 divisors (see below), whose sum is σ = 38241126000. Its totient is φ = 9815817600.

The previous prime is 20011631737. The next prime is 20011631777. The reversal of 20011631768 is 86713611002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25538 + ... + 201681.

Almost surely, 2^20011631768 is an apocalyptic number.

It is an amenable number.

20011631768 is a deficient number, since it is larger than the sum of its proper divisors (18229494232).

20011631768 is a wasteful number, since it uses less digits than its factorization.

20011631768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227435 (or 227431 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 20011631768 in words is "twenty billion, eleven million, six hundred thirty-one thousand, seven hundred sixty-eight".