63742455271680 has 144 divisors (see below), whose sum is σ = 203600752830720. Its totient is φ = 16996043751424.

The previous prime is 63742455271673. The next prime is 63742455271741. The reversal of 63742455271680 is 8617255424736.

It is a super-2 number, since 2×63742455271680² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32781736 + ... + 34671704.

It is an arithmetic number, because the mean of its divisors is an integer number (1413894116880).

Almost surely, 2^{63742455271680} is an apocalyptic number.

63742455271680 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 63742455271680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101800376415360).

63742455271680 is an abundant number, since it is smaller than the sum of its proper divisors (139858297559040).

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

63742455271680 is a wasteful number, since it uses less digits than its factorization.

63742455271680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898776 (or 1898762 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 60.

The spelling of 63742455271680 in words is "sixty-three trillion, seven hundred forty-two billion, four hundred fifty-five million, two hundred seventy-one thousand, six hundred eighty".