537375067021 has 4 divisors (see below), whose sum is σ = 578711610652. Its totient is φ = 496038523392.

The previous prime is 537375066973. The next prime is 537375067039. The reversal of 537375067021 is 120760573735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27170577225 + 510204489796 = 164835^2 + 714286^2 .

It is a cyclic number.

It is not a de Polignac number, because 537375067021 - 2¹¹ = 537375064973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537375067121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20668271796 + ... + 20668271821.

It is an arithmetic number, because the mean of its divisors is an integer number (144677902663).

Almost surely, 2^537375067021 is an apocalyptic number.

It is an amenable number.

537375067021 is a deficient number, since it is larger than the sum of its proper divisors (41336543631).

537375067021 is a wasteful number, since it uses less digits than its factorization.

537375067021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41336543630.

The product of its (nonzero) digits is 926100, while the sum is 46.

The spelling of 537375067021 in words is "five hundred thirty-seven billion, three hundred seventy-five million, sixty-seven thousand, twenty-one".