11515343656151 has 4 divisors (see below), whose sum is σ = 11760350968032. Its totient is φ = 11270336344272.

The previous prime is 11515343656147. The next prime is 11515343656169. The reversal of 11515343656151 is 15165634351511.

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

It is a cyclic number.

It is not a de Polignac number, because 11515343656151 - 2² = 11515343656147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 245007311833 = 11515343656151 / (1 + 1 + 5 + 1 + 5 + 3 + 4 + 3 + 6 + 5 + 6 + 1 + 5 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11515343656096 and 11515343656105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515343656181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122503655870 + ... + 122503655963.

It is an arithmetic number, because the mean of its divisors is an integer number (2940087742008).

Almost surely, 2^{11515343656151} is an apocalyptic number.

11515343656151 is a deficient number, since it is larger than the sum of its proper divisors (245007311881).

11515343656151 is an equidigital number, since it uses as much as digits as its factorization.

11515343656151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245007311880.

The product of its digits is 810000, while the sum is 47.

The spelling of 11515343656151 in words is "eleven trillion, five hundred fifteen billion, three hundred forty-three million, six hundred fifty-six thousand, one hundred fifty-one".