38957739660 has 144 divisors (see below), whose sum is σ = 135960552000. Its totient is φ = 8844820992.

The previous prime is 38957739637. The next prime is 38957739661. The reversal of 38957739660 is 6693775983.

38957739660 is a `hidden beast` number, since 38 + 95 + 77 + 396 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (38957739661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83986 + ... + 291494.

It is an arithmetic number, because the mean of its divisors is an integer number (944170500).

Almost surely, 2^38957739660 is an apocalyptic number.

38957739660 is a gapful number since it is divisible by the number (30) 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 38957739660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67980276000).

38957739660 is an abundant number, since it is smaller than the sum of its proper divisors (97002812340).

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

38957739660 is a wasteful number, since it uses less digits than its factorization.

38957739660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207680 (or 207675 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 63.

The spelling of 38957739660 in words is "thirty-eight billion, nine hundred fifty-seven million, seven hundred thirty-nine thousand, six hundred sixty".