20672056742 has 8 divisors (see below), whose sum is σ = 31198319256. Its totient is φ = 10272616992.

The previous prime is 20672056723. The next prime is 20672056751. The reversal of 20672056742 is 24765027602.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20672056742.

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, 31705283 + ... + 31705934.

It is an arithmetic number, because the mean of its divisors is an integer number (3899789907).

Almost surely, 2^20672056742 is an apocalyptic number.

20672056742 is a deficient number, since it is larger than the sum of its proper divisors (10526262514).

20672056742 is a wasteful number, since it uses less digits than its factorization.

20672056742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63411382.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 20672056742 in words is "twenty billion, six hundred seventy-two million, fifty-six thousand, seven hundred forty-two".