20631737011671 has 48 divisors (see below), whose sum is σ = 30914170560000. Its totient is φ = 13243562902080.

The previous prime is 20631737011663. The next prime is 20631737011741. The reversal of 20631737011671 is 17611073713602.

20631737011671 is a `hidden beast` number, since 2 + 0 + 631 + 7 + 3 + 7 + 0 + 1 + 1 + 6 + 7 + 1 = 666.

It is not a de Polignac number, because 20631737011671 - 2³ = 20631737011663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20631737011661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 179225710 + ... + 179340788.

It is an arithmetic number, because the mean of its divisors is an integer number (644045220000).

Almost surely, 2^{20631737011671} is an apocalyptic number.

20631737011671 is a deficient number, since it is larger than the sum of its proper divisors (10282433548329).

20631737011671 is a wasteful number, since it uses less digits than its factorization.

20631737011671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117004 (or 117001 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The spelling of 20631737011671 in words is "twenty trillion, six hundred thirty-one billion, seven hundred thirty-seven million, eleven thousand, six hundred seventy-one".