20670672751 has 8 divisors (see below), whose sum is σ = 21539542320. Its totient is φ = 19812209088.

The previous prime is 20670672739. The next prime is 20670672767. The reversal of 20670672751 is 15727607602.

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

It is a cyclic number.

It is not a de Polignac number, because 20670672751 - 2¹⁹ = 20670148463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20670672698 and 20670672707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670672721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2597421 + ... + 2605366.

It is an arithmetic number, because the mean of its divisors is an integer number (2692442790).

Almost surely, 2^20670672751 is an apocalyptic number.

20670672751 is a deficient number, since it is larger than the sum of its proper divisors (868869569).

20670672751 is a wasteful number, since it uses less digits than its factorization.

20670672751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202953.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 20670672751 in words is "twenty billion, six hundred seventy million, six hundred seventy-two thousand, seven hundred fifty-one".