63989023740 has 192 divisors, whose sum is σ = 196780752000. Its totient is φ = 15464300544.

The previous prime is 63989023697. The next prime is 63989023759. The reversal of 63989023740 is 4732098936.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11740536 + ... + 11745984.

It is an arithmetic number, because the mean of its divisors is an integer number (1024899750).

Almost surely, 2^63989023740 is an apocalyptic number.

63989023740 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 63989023740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98390376000).

63989023740 is an abundant number, since it is smaller than the sum of its proper divisors (132791728260).

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

63989023740 is a wasteful number, since it uses less digits than its factorization.

63989023740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5904 (or 5902 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 63989023740 in words is "sixty-three billion, nine hundred eighty-nine million, twenty-three thousand, seven hundred forty".