11161601660551 has 8 divisors (see below), whose sum is σ = 11302980331520. Its totient is φ = 11020225304088.

The previous prime is 11161601660483. The next prime is 11161601660567. The reversal of 11161601660551 is 15506610616111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11161601660551 - 2²³ = 11161593271943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161601660581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10450210 + ... + 11468656.

It is an arithmetic number, because the mean of its divisors is an integer number (1412872541440).

Almost surely, 2^{11161601660551} is an apocalyptic number.

11161601660551 is a deficient number, since it is larger than the sum of its proper divisors (141378670969).

11161601660551 is a wasteful number, since it uses less digits than its factorization.

11161601660551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157253.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 11161601660551 in words is "eleven trillion, one hundred sixty-one billion, six hundred one million, six hundred sixty thousand, five hundred fifty-one".