20731371662 has 8 divisors (see below), whose sum is σ = 31097722392. Its totient is φ = 10365464200.

The previous prime is 20731371643. The next prime is 20731371719. The reversal of 20731371662 is 26617313702.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56837 + ... + 211407.

It is an arithmetic number, because the mean of its divisors is an integer number (3887215299).

Almost surely, 2^20731371662 is an apocalyptic number.

20731371662 is a deficient number, since it is larger than the sum of its proper divisors (10366350730).

20731371662 is a wasteful number, since it uses less digits than its factorization.

20731371662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221634.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 20731371662 in words is "twenty billion, seven hundred thirty-one million, three hundred seventy-one thousand, six hundred sixty-two".