20011631739 has 32 divisors (see below), whose sum is σ = 29969533440. Its totient is φ = 11772230400.

The previous prime is 20011631737. The next prime is 20011631777. The reversal of 20011631739 is 93713611002.

It is not a de Polignac number, because 20011631739 - 2¹ = 20011631737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 31 ways as a sum of consecutive naturals, for example, 229002 + ... + 304080.

It is an arithmetic number, because the mean of its divisors is an integer number (936547920).

Almost surely, 2^20011631739 is an apocalyptic number.

20011631739 is a deficient number, since it is larger than the sum of its proper divisors (9957901701).

20011631739 is a wasteful number, since it uses less digits than its factorization.

20011631739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75331.

The product of its (nonzero) digits is 6804, while the sum is 33.

The spelling of 20011631739 in words is "twenty billion, eleven million, six hundred thirty-one thousand, seven hundred thirty-nine".