2421542325515 has 12 divisors (see below), whose sum is σ = 3002611696992. Its totient is φ = 1874742441840.

The previous prime is 2421542325481. The next prime is 2421542325563. The reversal of 2421542325515 is 5155232451242.

It is not a de Polignac number, because 2421542325515 - 2¹⁸ = 2421542063371 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251976707 + ... + 251986316.

It is an arithmetic number, because the mean of its divisors is an integer number (250217641416).

Almost surely, 2^{2421542325515} is an apocalyptic number.

2421542325515 is a deficient number, since it is larger than the sum of its proper divisors (581069371477).

2421542325515 is an equidigital number, since it uses as much as digits as its factorization.

2421542325515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503963090 (or 503963059 counting only the distinct ones).

The product of its digits is 480000, while the sum is 41.

Adding to 2421542325515 its reverse (5155232451242), we get a palindrome (7576774776757).

The spelling of 2421542325515 in words is "two trillion, four hundred twenty-one billion, five hundred forty-two million, three hundred twenty-five thousand, five hundred fifteen".