38505020505 has 32 divisors (see below), whose sum is σ = 71846112000. Its totient is φ = 17602292736.

The previous prime is 38505020503. The next prime is 38505020509. The reversal of 38505020505 is 50502050583.

It is not a de Polignac number, because 38505020505 - 2¹ = 38505020503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38505020503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3736840 + ... + 3747129.

It is an arithmetic number, because the mean of its divisors is an integer number (2245191000).

Almost surely, 2^38505020505 is an apocalyptic number.

38505020505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38505020505 is a deficient number, since it is larger than the sum of its proper divisors (33341091495).

38505020505 is an equidigital number, since it uses as much as digits as its factorization.

38505020505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483998 (or 7483984 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 38505020505 in words is "thirty-eight billion, five hundred five million, twenty thousand, five hundred five".