42453017515 has 4 divisors (see below), whose sum is σ = 50943621024. Its totient is φ = 33962414008.

The previous prime is 42453017483. The next prime is 42453017531. The reversal of 42453017515 is 51571035424.

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

It is a cyclic number.

It is not a de Polignac number, because 42453017515 - 2⁵ = 42453017483 is a prime.

It is a super-2 number, since 2×42453017515² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 4245301747 + ... + 4245301756.

It is an arithmetic number, because the mean of its divisors is an integer number (12735905256).

Almost surely, 2^42453017515 is an apocalyptic number.

42453017515 is a deficient number, since it is larger than the sum of its proper divisors (8490603509).

42453017515 is an equidigital number, since it uses as much as digits as its factorization.

42453017515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490603508.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 42453017515 in words is "forty-two billion, four hundred fifty-three million, seventeen thousand, five hundred fifteen".