4771647645555 has 24 divisors (see below), whose sum is σ = 8881107455952. Its totient is φ = 2181324637632.

The previous prime is 4771647645551. The next prime is 4771647645581. The reversal of 4771647645555 is 5555467461774.

It is a happy number.

It is not a de Polignac number, because 4771647645555 - 2² = 4771647645551 is a prime.

It is a super-2 number, since 2×4771647645555² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4771647645551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3246018072 + ... + 3246019541.

It is an arithmetic number, because the mean of its divisors is an integer number (370046143998).

Almost surely, 2^{4771647645555} is an apocalyptic number.

4771647645555 is a deficient number, since it is larger than the sum of its proper divisors (4109459810397).

4771647645555 is a wasteful number, since it uses less digits than its factorization.

4771647645555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492037635 (or 6492037628 counting only the distinct ones).

The product of its digits is 493920000, while the sum is 66.

The spelling of 4771647645555 in words is "four trillion, seven hundred seventy-one billion, six hundred forty-seven million, six hundred forty-five thousand, five hundred fifty-five".