1655206522231 has 8 divisors (see below), whose sum is σ = 1844812223280. Its totient is φ = 1475849778048.

The previous prime is 1655206522201. The next prime is 1655206522247. The reversal of 1655206522231 is 1322256025561.

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 1655206522231 - 2⁵ = 1655206522199 is a prime.

It is a super-2 number, since 2×1655206522231² (a number of 25 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 (1655206522201) 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, 2562238876 + ... + 2562239521.

It is an arithmetic number, because the mean of its divisors is an integer number (230601527910).

Almost surely, 2^{1655206522231} is an apocalyptic number.

1655206522231 is a deficient number, since it is larger than the sum of its proper divisors (189605701049).

1655206522231 is a wasteful number, since it uses less digits than its factorization.

1655206522231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124478433.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 1655206522231 in words is "one trillion, six hundred fifty-five billion, two hundred six million, five hundred twenty-two thousand, two hundred thirty-one".