38387596209681 has 12 divisors (see below), whose sum is σ = 52887801649776. Its totient is φ = 24766191101160.

The previous prime is 38387596209667. The next prime is 38387596209691. The reversal of 38387596209681 is 18690269578383.

It is not a de Polignac number, because 38387596209681 - 2¹⁰ = 38387596208657 is a prime.

It is a super-2 number, since 2×38387596209681² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38387596209601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6657575371 + ... + 6657581136.

It is an arithmetic number, because the mean of its divisors is an integer number (4407316804148).

Almost surely, 2^{38387596209681} is an apocalyptic number.

38387596209681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38387596209681 is a deficient number, since it is larger than the sum of its proper divisors (14500205440095).

38387596209681 is a wasteful number, since it uses less digits than its factorization.

38387596209681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315156572 (or 13315156541 counting only the distinct ones).

The product of its (nonzero) digits is 940584960, while the sum is 75.

The spelling of 38387596209681 in words is "thirty-eight trillion, three hundred eighty-seven billion, five hundred ninety-six million, two hundred nine thousand, six hundred eighty-one".