537440515640 has 64 divisors (see below), whose sum is σ = 1382311526400. Its totient is φ = 184222435968.

The previous prime is 537440515639. The next prime is 537440515669. The reversal of 537440515640 is 46515044735.

It is a junction number, because it is equal to n+sod(n) for n = 537440515591 and 537440515600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993737 + ... + 1436103.

It is an arithmetic number, because the mean of its divisors is an integer number (21598617600).

Almost surely, 2^537440515640 is an apocalyptic number.

It is an amenable number.

537440515640 is an abundant number, since it is smaller than the sum of its proper divisors (844871010760).

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

537440515640 is a wasteful number, since it uses less digits than its factorization.

537440515640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446724 (or 446720 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 537440515640 in words is "five hundred thirty-seven billion, four hundred forty million, five hundred fifteen thousand, six hundred forty".