201532540665 has 32 divisors (see below), whose sum is σ = 326061388800. Its totient is φ = 106287546816.

The previous prime is 201532540633. The next prime is 201532540679. The reversal of 201532540665 is 566045235102.

It is not a de Polignac number, because 201532540665 - 2⁵ = 201532540633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279454 + ... + 693656.

It is an arithmetic number, because the mean of its divisors is an integer number (10189418400).

Almost surely, 2^201532540665 is an apocalyptic number.

It is an amenable number.

201532540665 is a deficient number, since it is larger than the sum of its proper divisors (124528848135).

201532540665 is a wasteful number, since it uses less digits than its factorization.

201532540665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414573.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 201532540665 its reverse (566045235102), we get a palindrome (767577775767).

The spelling of 201532540665 in words is "two hundred one billion, five hundred thirty-two million, five hundred forty thousand, six hundred sixty-five".