615222745040 has 40 divisors (see below), whose sum is σ = 1431501095328. Its totient is φ = 245898437760.

The previous prime is 615222744989. The next prime is 615222745051. The reversal of 615222745040 is 40547222516.

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

It is a junction number, because it is equal to n+sod(n) for n = 615222744985 and 615222745003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2875142 + ... + 3081701.

Almost surely, 2^615222745040 is an apocalyptic number.

It is an amenable number.

615222745040 is an abundant number, since it is smaller than the sum of its proper divisors (816278350288).

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

615222745040 is a wasteful number, since it uses less digits than its factorization.

615222745040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958147 (or 5958141 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

Adding to 615222745040 its reverse (40547222516), we get a palindrome (655769967556).

The spelling of 615222745040 in words is "six hundred fifteen billion, two hundred twenty-two million, seven hundred forty-five thousand, forty".