38646769129 has 8 divisors (see below), whose sum is σ = 39158743680. Its totient is φ = 38136522336.

The previous prime is 38646769127. The next prime is 38646769193. The reversal of 38646769129 is 92196764683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38646769129 - 2¹ = 38646769127 is a prime.

It is a super-2 number, since 2×38646769129² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38646769127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386877 + ... + 476410.

It is an arithmetic number, because the mean of its divisors is an integer number (4894842960).

Almost surely, 2^38646769129 is an apocalyptic number.

It is an amenable number.

38646769129 is a deficient number, since it is larger than the sum of its proper divisors (511974551).

38646769129 is an equidigital number, since it uses as much as digits as its factorization.

38646769129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863879.

The product of its digits is 23514624, while the sum is 61.

The spelling of 38646769129 in words is "thirty-eight billion, six hundred forty-six million, seven hundred sixty-nine thousand, one hundred twenty-nine".