537065532721 has 16 divisors (see below), whose sum is σ = 543642523776. Its totient is φ = 530530000000.

The previous prime is 537065532623. The next prime is 537065532811. The reversal of 537065532721 is 127235560735.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 537065532721 - 2⁷ = 537065532593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537065532121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39049596 + ... + 39063346.

It is an arithmetic number, because the mean of its divisors is an integer number (33977657736).

Almost surely, 2^537065532721 is an apocalyptic number.

It is an amenable number.

537065532721 is a deficient number, since it is larger than the sum of its proper divisors (6576991055).

537065532721 is a wasteful number, since it uses less digits than its factorization.

537065532721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15224.

The product of its (nonzero) digits is 1323000, while the sum is 46.

The spelling of 537065532721 in words is "five hundred thirty-seven billion, sixty-five million, five hundred thirty-two thousand, seven hundred twenty-one".