655038416671 has 4 divisors (see below), whose sum is σ = 655040040192. Its totient is φ = 655036793152.

The previous prime is 655038416647. The next prime is 655038416701. The reversal of 655038416671 is 176614830556.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655038416671 is a prime.

It is a super-2 number, since 2×655038416671² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655038413671) 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, 312015 + ... + 1186351.

It is an arithmetic number, because the mean of its divisors is an integer number (163760010048).

Almost surely, 2^655038416671 is an apocalyptic number.

655038416671 is a deficient number, since it is larger than the sum of its proper divisors (1623521).

655038416671 is an equidigital number, since it uses as much as digits as its factorization.

655038416671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623520.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 655038416671 in words is "six hundred fifty-five billion, thirty-eight million, four hundred sixteen thousand, six hundred seventy-one".