20011631738 has 8 divisors (see below), whose sum is σ = 34305654432. Its totient is φ = 8576413596.

The previous prime is 20011631737. The next prime is 20011631777. The reversal of 20011631738 is 83713611002.

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

It is not an unprimeable number, because it can be changed into a prime (20011631737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714701120 + ... + 714701147.

It is an arithmetic number, because the mean of its divisors is an integer number (4288206804).

Almost surely, 2^20011631738 is an apocalyptic number.

20011631738 is a deficient number, since it is larger than the sum of its proper divisors (14294022694).

20011631738 is a wasteful number, since it uses less digits than its factorization.

20011631738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429402276.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 20011631738 in words is "twenty billion, eleven million, six hundred thirty-one thousand, seven hundred thirty-eight".