420448514640 has 160 divisors (see below), whose sum is σ = 1625006278656. Its totient is φ = 87365921280.

The previous prime is 420448514627. The next prime is 420448514657. The reversal of 420448514640 is 46415844024.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 420448514592 and 420448514601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11357292 + ... + 11394251.

Almost surely, 2^420448514640 is an apocalyptic number.

420448514640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420448514640 is an abundant number, since it is smaller than the sum of its proper divisors (1204557764016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420448514640 is a wasteful number, since it uses less digits than its factorization.

420448514640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22751577 (or 22751571 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 42.

The spelling of 420448514640 in words is "four hundred twenty billion, four hundred forty-eight million, five hundred fourteen thousand, six hundred forty".