63420771960 has 384 divisors, whose sum is σ = 261622656000. Its totient is φ = 13380816384.

The previous prime is 63420771919. The next prime is 63420771979. The reversal of 63420771960 is 6917702436.

63420771960 is a `hidden beast` number, since 634 + 2 + 0 + 7 + 7 + 1 + 9 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 95 ways as a sum of consecutive naturals, for example, 1252821 + ... + 1302459.

It is an arithmetic number, because the mean of its divisors is an integer number (681309000).

Almost surely, 2^63420771960 is an apocalyptic number.

63420771960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63420771960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130811328000).

63420771960 is an abundant number, since it is smaller than the sum of its proper divisors (198201884040).

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

63420771960 is a wasteful number, since it uses less digits than its factorization.

63420771960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49692 (or 49669 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 63420771960 in words is "sixty-three billion, four hundred twenty million, seven hundred seventy-one thousand, nine hundred sixty".