39640942521380 has 48 divisors (see below), whose sum is σ = 86865993817344. Its totient is φ = 15166860339840.

The previous prime is 39640942521361. The next prime is 39640942521391. The reversal of 39640942521380 is 8312524904693.

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, 96980714 + ... + 97388606.

It is an arithmetic number, because the mean of its divisors is an integer number (1809708204528).

Almost surely, 2^{39640942521380} is an apocalyptic number.

It is an amenable number.

39640942521380 is an abundant number, since it is smaller than the sum of its proper divisors (47225051295964).

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

39640942521380 is a wasteful number, since it uses less digits than its factorization.

39640942521380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619196 (or 619194 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 39640942521380 in words is "thirty-nine trillion, six hundred forty billion, nine hundred forty-two million, five hundred twenty-one thousand, three hundred eighty".