13061971838 has 16 divisors (see below), whose sum is σ = 21335346000. Its totient is φ = 5973895872.

The previous prime is 13061971829. The next prime is 13061971843. The reversal of 13061971838 is 83817916031.

It is a junction number, because it is equal to n+sod(n) for n = 13061971792 and 13061971801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5925383 + ... + 5927586.

It is an arithmetic number, because the mean of its divisors is an integer number (1333459125).

Almost surely, 2^13061971838 is an apocalyptic number.

13061971838 is a deficient number, since it is larger than the sum of its proper divisors (8273374162).

13061971838 is a wasteful number, since it uses less digits than its factorization.

13061971838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11853019.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 13061971838 in words is "thirteen billion, sixty-one million, nine hundred seventy-one thousand, eight hundred thirty-eight".