20571714128 has 20 divisors (see below), whose sum is σ = 45551652960. Its totient is φ = 8816448864.

The previous prime is 20571714113. The next prime is 20571714167. The reversal of 20571714128 is 82141717502.

It is a junction number, because it is equal to n+sod(n) for n = 20571714091 and 20571714100.

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, 91837898 + ... + 91838121.

It is an arithmetic number, because the mean of its divisors is an integer number (2277582648).

Almost surely, 2^20571714128 is an apocalyptic number.

20571714128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20571714128 is an abundant number, since it is smaller than the sum of its proper divisors (24979938832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20571714128 is a wasteful number, since it uses less digits than its factorization.

20571714128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183676034 (or 183676028 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 20571714128 in words is "twenty billion, five hundred seventy-one million, seven hundred fourteen thousand, one hundred twenty-eight".