13111511800628 has 6 divisors (see below), whose sum is σ = 22945145651106. Its totient is φ = 6555755900312.

The previous prime is 13111511800613. The next prime is 13111511800693. The reversal of 13111511800628 is 82600811511131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12494514118564 + 616997682064 = 3534758^2 + 785492^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13111511800591 and 13111511800600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638938975075 + ... + 1638938975082.

It is an arithmetic number, because the mean of its divisors is an integer number (3824190941851).

Almost surely, 2^{13111511800628} is an apocalyptic number.

It is an amenable number.

13111511800628 is a deficient number, since it is larger than the sum of its proper divisors (9833633850478).

13111511800628 is a wasteful number, since it uses less digits than its factorization.

13111511800628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277877950161 (or 3277877950159 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 38.

The spelling of 13111511800628 in words is "thirteen trillion, one hundred eleven billion, five hundred eleven million, eight hundred thousand, six hundred twenty-eight".