202006111657 has 32 divisors (see below), whose sum is σ = 239311936512. Its totient is φ = 166942923264.

The previous prime is 202006111639. The next prime is 202006111679. The reversal of 202006111657 is 756111600202.

It is a cyclic number.

It is not a de Polignac number, because 202006111657 - 2¹⁵ = 202006078889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202006111627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7488528 + ... + 7515454.

It is an arithmetic number, because the mean of its divisors is an integer number (7478498016).

Almost surely, 2^202006111657 is an apocalyptic number.

It is an amenable number.

202006111657 is a deficient number, since it is larger than the sum of its proper divisors (37305824855).

202006111657 is a wasteful number, since it uses less digits than its factorization.

202006111657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27337.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 202006111657 its reverse (756111600202), we get a palindrome (958117711859).

The spelling of 202006111657 in words is "two hundred two billion, six million, one hundred eleven thousand, six hundred fifty-seven".