6556773977 has 8 divisors (see below), whose sum is σ = 7062350400. Its totient is φ = 6051370320.

The previous prime is 6556773953. The next prime is 6556773983. The reversal of 6556773977 is 7793776556.

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 6556773977 - 2¹⁰ = 6556772953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556773077) 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, 41852 + ... + 121922.

It is an arithmetic number, because the mean of its divisors is an integer number (882793800).

Almost surely, 2^6556773977 is an apocalyptic number.

It is an amenable number.

6556773977 is a deficient number, since it is larger than the sum of its proper divisors (505576423).

6556773977 is a wasteful number, since it uses less digits than its factorization.

6556773977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86383.

The product of its digits is 58344300, while the sum is 62.

The square root of 6556773977 is about 80973.9092362472. The cubic root of 6556773977 is about 1871.6734119352.

The spelling of 6556773977 in words is "six billion, five hundred fifty-six million, seven hundred seventy-three thousand, nine hundred seventy-seven".