420443141552515 has 32 divisors (see below), whose sum is σ = 537026711187456. Its totient is φ = 315515031012480.

The previous prime is 420443141552459. The next prime is 420443141552587. The reversal of 420443141552515 is 515255141344024.

It is not a de Polignac number, because 420443141552515 - 2⁷ = 420443141552387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307630999 + ... + 308994688.

It is an arithmetic number, because the mean of its divisors is an integer number (16782084724608).

Almost surely, 2^{420443141552515} is an apocalyptic number.

420443141552515 is a deficient number, since it is larger than the sum of its proper divisors (116583569634941).

420443141552515 is a wasteful number, since it uses less digits than its factorization.

420443141552515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616625859.

The product of its (nonzero) digits is 1920000, while the sum is 46.

Adding to 420443141552515 its reverse (515255141344024), we get a palindrome (935698282896539).

The spelling of 420443141552515 in words is "four hundred twenty trillion, four hundred forty-three billion, one hundred forty-one million, five hundred fifty-two thousand, five hundred fifteen".