63420913780 has 24 divisors (see below), whose sum is σ = 152210193408. Its totient is φ = 21744313248.

The previous prime is 63420913747. The next prime is 63420913819. The reversal of 63420913780 is 8731902436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226503124 + ... + 226503403.

It is an arithmetic number, because the mean of its divisors is an integer number (6342091392).

Almost surely, 2^63420913780 is an apocalyptic number.

It is an amenable number.

63420913780 is an abundant number, since it is smaller than the sum of its proper divisors (88789279628).

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

63420913780 is a wasteful number, since it uses less digits than its factorization.

63420913780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453006543 (or 453006541 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 63420913780 in words is "sixty-three billion, four hundred twenty million, nine hundred thirteen thousand, seven hundred eighty".