63840067620 has 192 divisors, whose sum is σ = 216023334912. Its totient is φ = 13776768000.

The previous prime is 63840067609. The next prime is 63840067633. The reversal of 63840067620 is 2676004836.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 474025 + ... + 593615.

It is an arithmetic number, because the mean of its divisors is an integer number (1125121536).

Almost surely, 2^63840067620 is an apocalyptic number.

63840067620 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 63840067620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108011667456).

63840067620 is an abundant number, since it is smaller than the sum of its proper divisors (152183267292).

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

63840067620 is a wasteful number, since it uses less digits than its factorization.

63840067620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119682 (or 119680 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 63840067620 in words is "sixty-three billion, eight hundred forty million, sixty-seven thousand, six hundred twenty".