615403020241 has 4 divisors (see below), whose sum is σ = 615499894692. Its totient is φ = 615306145792.

The previous prime is 615403020191. The next prime is 615403020263. The reversal of 615403020241 is 142020304516.

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

It can be written as a sum of positive squares in 2 ways, for example, as 294485302225 + 320917718016 = 542665^2 + 566496^2 .

It is a cyclic number.

It is not a de Polignac number, because 615403020241 - 2²¹ = 615400923089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615403020641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48427696 + ... + 48440401.

It is an arithmetic number, because the mean of its divisors is an integer number (153874973673).

Almost surely, 2^615403020241 is an apocalyptic number.

It is an amenable number.

615403020241 is a deficient number, since it is larger than the sum of its proper divisors (96874451).

615403020241 is an equidigital number, since it uses as much as digits as its factorization.

615403020241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96874450.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 615403020241 its reverse (142020304516), we get a palindrome (757423324757).

The spelling of 615403020241 in words is "six hundred fifteen billion, four hundred three million, twenty thousand, two hundred forty-one".