6555661151 has 4 divisors (see below), whose sum is σ = 7059942792. Its totient is φ = 6051379512.

The previous prime is 6555661139. The next prime is 6555661153. The reversal of 6555661151 is 1511665556.

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 6555661151 - 2¹⁰ = 6555660127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6555661099 and 6555661108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555661153) 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, 252140801 + ... + 252140826.

It is an arithmetic number, because the mean of its divisors is an integer number (1764985698).

Almost surely, 2^6555661151 is an apocalyptic number.

6555661151 is a deficient number, since it is larger than the sum of its proper divisors (504281641).

6555661151 is a wasteful number, since it uses less digits than its factorization.

6555661151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504281640.

The product of its digits is 135000, while the sum is 41.

The square root of 6555661151 is about 80967.0374349957. The cubic root of 6555661151 is about 1871.5675181583.

The spelling of 6555661151 in words is "six billion, five hundred fifty-five million, six hundred sixty-one thousand, one hundred fifty-one".