615355041305040 has 80 divisors (see below), whose sum is σ = 1920233744900736. Its totient is φ = 163007957952000.

The previous prime is 615355041305021. The next prime is 615355041305041. The reversal of 615355041305040 is 40503140553516.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 615355041304983 and 615355041305001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615355041305041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8489961571 + ... + 8490034050.

Almost surely, 2^{615355041305040} is an apocalyptic number.

615355041305040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

615355041305040 is an abundant number, since it is smaller than the sum of its proper divisors (1304878703595696).

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

615355041305040 is a wasteful number, since it uses less digits than its factorization.

615355041305040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16979995788 (or 16979995782 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

Adding to 615355041305040 its reverse (40503140553516), we get a palindrome (655858181858556).

The spelling of 615355041305040 in words is "six hundred fifteen trillion, three hundred fifty-five billion, forty-one million, three hundred five thousand, forty".