537642680840 has 64 divisors (see below), whose sum is σ = 1230015760560. Its totient is φ = 211447480320.

The previous prime is 537642680801. The next prime is 537642680873. The reversal of 537642680840 is 48086246735.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 35508879844 + 502133800996 = 188438^2 + 708614^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6284432 + ... + 6369408.

Almost surely, 2^537642680840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537642680840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615007880280).

537642680840 is an abundant number, since it is smaller than the sum of its proper divisors (692373079720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

537642680840 is a wasteful number, since it uses less digits than its factorization.

537642680840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87642 (or 87638 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 53.

The spelling of 537642680840 in words is "five hundred thirty-seven billion, six hundred forty-two million, six hundred eighty thousand, eight hundred forty".