20571034011 has 8 divisors (see below), whose sum is σ = 29921504064. Its totient is φ = 12467293320.

The previous prime is 20571034007. The next prime is 20571034013. The reversal of 20571034011 is 11043017502.

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

It is not a de Polignac number, because 20571034011 - 2² = 20571034007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20571034013) 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, 311682301 + ... + 311682366.

It is an arithmetic number, because the mean of its divisors is an integer number (3740188008).

Almost surely, 2^20571034011 is an apocalyptic number.

20571034011 is a deficient number, since it is larger than the sum of its proper divisors (9350470053).

20571034011 is a wasteful number, since it uses less digits than its factorization.

20571034011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623364681.

The product of its (nonzero) digits is 840, while the sum is 24.

The spelling of 20571034011 in words is "twenty billion, five hundred seventy-one million, thirty-four thousand, eleven".