20710573951 has 4 divisors (see below), whose sum is σ = 21611033712. Its totient is φ = 19810114192.

The previous prime is 20710573931. The next prime is 20710573957. The reversal of 20710573951 is 15937501702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15937501702 = 2 ⋅7968750851.

It is a cyclic number.

It is not a de Polignac number, because 20710573951 - 2¹⁹ = 20710049663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20710573957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450229846 + ... + 450229891.

It is an arithmetic number, because the mean of its divisors is an integer number (5402758428).

Almost surely, 2^20710573951 is an apocalyptic number.

20710573951 is a deficient number, since it is larger than the sum of its proper divisors (900459761).

20710573951 is an equidigital number, since it uses as much as digits as its factorization.

20710573951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900459760.

The product of its (nonzero) digits is 66150, while the sum is 40.

The spelling of 20710573951 in words is "twenty billion, seven hundred ten million, five hundred seventy-three thousand, nine hundred fifty-one".