6550156515161 has 4 divisors (see below), whose sum is σ = 7485893160192. Its totient is φ = 5614419870132.

The previous prime is 6550156515151. The next prime is 6550156515197. The reversal of 6550156515161 is 1615156510556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6550156515161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6550156515151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467868322505 + ... + 467868322518.

It is an arithmetic number, because the mean of its divisors is an integer number (1871473290048).

Almost surely, 2^{6550156515161} is an apocalyptic number.

It is an amenable number.

6550156515161 is a deficient number, since it is larger than the sum of its proper divisors (935736645031).

6550156515161 is an equidigital number, since it uses as much as digits as its factorization.

6550156515161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935736645030.

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 6550156515161 in words is "six trillion, five hundred fifty billion, one hundred fifty-six million, five hundred fifteen thousand, one hundred sixty-one".