13430118928778 has 4 divisors (see below), whose sum is σ = 20145178393170. Its totient is φ = 6715059464388.

The previous prime is 13430118928747. The next prime is 13430118928823. The reversal of 13430118928778 is 87782981103431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11646951294169 + 1783167634609 = 3412763^2 + 1335353^2 .

It is a super-2 number, since 2×13430118928778² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13430118928778.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3357529732193 + ... + 3357529732196.

Almost surely, 2^{13430118928778} is an apocalyptic number.

13430118928778 is a deficient number, since it is larger than the sum of its proper divisors (6715059464392).

13430118928778 is an equidigital number, since it uses as much as digits as its factorization.

13430118928778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715059464391.

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 13430118928778 in words is "thirteen trillion, four hundred thirty billion, one hundred eighteen million, nine hundred twenty-eight thousand, seven hundred seventy-eight".