452121130640 has 40 divisors (see below), whose sum is σ = 1056517612920. Its totient is φ = 179930433536.

The previous prime is 452121130633. The next prime is 452121130661. The reversal of 452121130640 is 46031121254.

It can be written as a sum of positive squares in 4 ways, for example, as 60325254544 + 391795876096 = 245612^2 + 625936^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14328185 + ... + 14359704.

It is an arithmetic number, because the mean of its divisors is an integer number (26412940323).

Almost surely, 2^452121130640 is an apocalyptic number.

452121130640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

452121130640 is an abundant number, since it is smaller than the sum of its proper divisors (604396482280).

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

452121130640 is a wasteful number, since it uses less digits than its factorization.

452121130640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28688099 (or 28688093 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 452121130640 its reverse (46031121254), we get a palindrome (498152251894).

The spelling of 452121130640 in words is "four hundred fifty-two billion, one hundred twenty-one million, one hundred thirty thousand, six hundred forty".