420515969451 has 16 divisors (see below), whose sum is σ = 569176320000. Its totient is φ = 276101562528.

The previous prime is 420515969441. The next prime is 420515969513. The reversal of 420515969451 is 154969515024.

It is not a de Polignac number, because 420515969451 - 2⁶ = 420515969387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420515969394 and 420515969403.

It is not an unprimeable number, because it can be changed into a prime (420515969411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746625 + ... + 1182573.

It is an arithmetic number, because the mean of its divisors is an integer number (35573520000).

Almost surely, 2^420515969451 is an apocalyptic number.

420515969451 is a deficient number, since it is larger than the sum of its proper divisors (148660350549).

420515969451 is a wasteful number, since it uses less digits than its factorization.

420515969451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440818.

The product of its (nonzero) digits is 1944000, while the sum is 51.

The spelling of 420515969451 in words is "four hundred twenty billion, five hundred fifteen million, nine hundred sixty-nine thousand, four hundred fifty-one".