536540650440 has 128 divisors (see below), whose sum is σ = 1650751488000. Its totient is φ = 139447040768.

The previous prime is 536540650391. The next prime is 536540650453. The reversal of 536540650440 is 44056045635.

It is a junction number, because it is equal to n+sod(n) for n = 536540650392 and 536540650401.

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, 1148941 + ... + 1546979.

It is an arithmetic number, because the mean of its divisors is an integer number (12896496000).

Almost surely, 2^536540650440 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 536540650440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825375744000).

536540650440 is an abundant number, since it is smaller than the sum of its proper divisors (1114210837560).

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

536540650440 is a wasteful number, since it uses less digits than its factorization.

536540650440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398339 (or 398335 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 536540650440 in words is "five hundred thirty-six billion, five hundred forty million, six hundred fifty thousand, four hundred forty".