6161595551 has 4 divisors (see below), whose sum is σ = 6165590352. Its totient is φ = 6157600752.

The previous prime is 6161595521. The next prime is 6161595569. The reversal of 6161595551 is 1555951616.

6161595551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6161595551 - 2⁶ = 6161595487 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 (6161595521) 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, 1995086 + ... + 1998171.

It is an arithmetic number, because the mean of its divisors is an integer number (1541397588).

Almost surely, 2^6161595551 is an apocalyptic number.

6161595551 is a deficient number, since it is larger than the sum of its proper divisors (3994801).

6161595551 is a wasteful number, since it uses less digits than its factorization.

6161595551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994800.

The product of its digits is 202500, while the sum is 44.

The square root of 6161595551 is about 78495.8314243502. The cubic root of 6161595551 is about 1833.2895485484.

The spelling of 6161595551 in words is "six billion, one hundred sixty-one million, five hundred ninety-five thousand, five hundred fifty-one".