12538466770038 has 64 divisors (see below), whose sum is σ = 28043116054272. Its totient is φ = 3704510839680.

The previous prime is 12538466769841. The next prime is 12538466770051. The reversal of 12538466770038 is 83007766483521.

It is a happy number.

It is a super-3 number, since 3×12538466770038³ (a number of 40 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2385181 + ... + 5546712.

It is an arithmetic number, because the mean of its divisors is an integer number (438173688348).

Almost surely, 2^{12538466770038} is an apocalyptic number.

12538466770038 is an abundant number, since it is smaller than the sum of its proper divisors (15504649284234).

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

12538466770038 is a wasteful number, since it uses less digits than its factorization.

12538466770038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7932509.

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 12538466770038 in words is "twelve trillion, five hundred thirty-eight billion, four hundred sixty-six million, seven hundred seventy thousand, thirty-eight".