615430361345242 has 4 divisors (see below), whose sum is σ = 923145542017866. Its totient is φ = 307715180672620.

The previous prime is 615430361345159. The next prime is 615430361345287. The reversal of 615430361345242 is 242543163034516.

615430361345242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 585221366439801 + 30208994905441 = 24191349^2 + 5496271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153857590336309 + ... + 153857590336312.

Almost surely, 2^{615430361345242} is an apocalyptic number.

615430361345242 is a deficient number, since it is larger than the sum of its proper divisors (307715180672624).

615430361345242 is a wasteful number, since it uses less digits than its factorization.

615430361345242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307715180672623.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 615430361345242 in words is "six hundred fifteen trillion, four hundred thirty billion, three hundred sixty-one million, three hundred forty-five thousand, two hundred forty-two".