5611011661154 has 4 divisors (see below), whose sum is σ = 8416517491734. Its totient is φ = 2805505830576.

The previous prime is 5611011661139. The next prime is 5611011661159. The reversal of 5611011661154 is 4511661101165.

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., 5454256639225 + 156755021929 = 2335435^2 + 395923^2 .

It is a super-2 number, since 2×5611011661154² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5611011661159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402752915287 + ... + 1402752915290.

Almost surely, 2^{5611011661154} is an apocalyptic number.

5611011661154 is a deficient number, since it is larger than the sum of its proper divisors (2805505830580).

5611011661154 is a wasteful number, since it uses less digits than its factorization.

5611011661154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805505830579.

The product of its (nonzero) digits is 21600, while the sum is 38.

The spelling of 5611011661154 in words is "five trillion, six hundred eleven billion, eleven million, six hundred sixty-one thousand, one hundred fifty-four".