652660534440 has 48 divisors (see below), whose sum is σ = 2121146738100. Its totient is φ = 174042809088.

The previous prime is 652660534373. The next prime is 652660534447. The reversal of 652660534440 is 44435066256.

It is a happy number.

652660534440 is a `hidden beast` number, since 6 + 5 + 2 + 6 + 605 + 34 + 4 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 610939203876 + 41721330564 = 781626^2 + 204258^2 .

It is a super-2 number, since 2×652660534440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (652660534447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 906472605 + ... + 906473324.

Almost surely, 2^652660534440 is an apocalyptic number.

652660534440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

652660534440 is an abundant number, since it is smaller than the sum of its proper divisors (1468486203660).

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

652660534440 is a wasteful number, since it uses less digits than its factorization.

652660534440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812945946 (or 1812945939 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 652660534440 in words is "six hundred fifty-two billion, six hundred sixty million, five hundred thirty-four thousand, four hundred forty".