38721137572842 has 32 divisors (see below), whose sum is σ = 77465879366400. Its totient is φ = 12903112163328.

The previous prime is 38721137572829. The next prime is 38721137572861. The reversal of 38721137572842 is 24827573112783.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849702634 + ... + 849748202.

It is an arithmetic number, because the mean of its divisors is an integer number (2420808730200).

Almost surely, 2^{38721137572842} is an apocalyptic number.

38721137572842 is an abundant number, since it is smaller than the sum of its proper divisors (38744741793558).

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

38721137572842 is a wasteful number, since it uses less digits than its factorization.

38721137572842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85630.

The product of its digits is 31610880, while the sum is 60.

The spelling of 38721137572842 in words is "thirty-eight trillion, seven hundred twenty-one billion, one hundred thirty-seven million, five hundred seventy-two thousand, eight hundred forty-two".