238836705505 has 16 divisors (see below), whose sum is σ = 295998165504. Its totient is φ = 184812819840.

The previous prime is 238836705493. The next prime is 238836705517. The reversal of 238836705505 is 505507638832.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (238836705493) and next prime (238836705517).

It is not a de Polignac number, because 238836705505 - 2³³ = 230246770913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77659 + ... + 695488.

It is an arithmetic number, because the mean of its divisors is an integer number (18499885344).

Almost surely, 2^238836705505 is an apocalyptic number.

It is an amenable number.

238836705505 is a deficient number, since it is larger than the sum of its proper divisors (57161459999).

238836705505 is a wasteful number, since it uses less digits than its factorization.

238836705505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775176.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 238836705505 in words is "two hundred thirty-eight billion, eight hundred thirty-six million, seven hundred five thousand, five hundred five".