1655442324431 has 16 divisors (see below), whose sum is σ = 1911586560000. Its totient is φ = 1404229730688.

The previous prime is 1655442324413. The next prime is 1655442324433. The reversal of 1655442324431 is 1344232445561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655442324431 is a prime.

It is a super-2 number, since 2×1655442324431² (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 (1655442324433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302570 + ... + 1844568.

It is an arithmetic number, because the mean of its divisors is an integer number (119474160000).

Almost surely, 2^{1655442324431} is an apocalyptic number.

1655442324431 is a deficient number, since it is larger than the sum of its proper divisors (256144235569).

1655442324431 is a wasteful number, since it uses less digits than its factorization.

1655442324431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543598.

The product of its digits is 1382400, while the sum is 44.

Adding to 1655442324431 its reverse (1344232445561), we get a palindrome (2999674769992).

The spelling of 1655442324431 in words is "one trillion, six hundred fifty-five billion, four hundred forty-two million, three hundred twenty-four thousand, four hundred thirty-one".