64733650421140 has 24 divisors (see below), whose sum is σ = 136918656292320. Its totient is φ = 25707176281248.

The previous prime is 64733650421107. The next prime is 64733650421191. The reversal of 64733650421140 is 4112405633746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11642740102 + ... + 11642745661.

It is an arithmetic number, because the mean of its divisors is an integer number (5704944012180).

Almost surely, 2^{64733650421140} is an apocalyptic number.

It is an amenable number.

64733650421140 is an abundant number, since it is smaller than the sum of its proper divisors (72185005871180).

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

64733650421140 is a wasteful number, since it uses less digits than its factorization.

64733650421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23285485911 (or 23285485909 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 64733650421140 in words is "sixty-four trillion, seven hundred thirty-three billion, six hundred fifty million, four hundred twenty-one thousand, one hundred forty".