13046789778 has 16 divisors (see below), whose sum is σ = 28465723296. Its totient is φ = 3953572640.

The previous prime is 13046789753. The next prime is 13046789801. The reversal of 13046789778 is 87798764031.

It is a super-2 number, since 2×13046789778² (a number of 21 digits) contains 22 as substring.

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, 98839251 + ... + 98839382.

It is an arithmetic number, because the mean of its divisors is an integer number (1779107706).

Almost surely, 2^13046789778 is an apocalyptic number.

13046789778 is an abundant number, since it is smaller than the sum of its proper divisors (15418933518).

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

13046789778 is a wasteful number, since it uses less digits than its factorization.

13046789778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197678649.

The product of its (nonzero) digits is 14224896, while the sum is 60.

The spelling of 13046789778 in words is "thirteen billion, forty-six million, seven hundred eighty-nine thousand, seven hundred seventy-eight".