1545553548431 has 2 divisors, whose sum is σ = 1545553548432. Its totient is φ = 1545553548430.

The previous prime is 1545553548373. The next prime is 1545553548467. The reversal of 1545553548431 is 1348453555451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1545553548431 - 2⁶ = 1545553548367 is a prime.

It is a super-2 number, since 2×1545553548431² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545553548131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772776774215 + 772776774216.

It is an arithmetic number, because the mean of its divisors is an integer number (772776774216).

Almost surely, 2^{1545553548431} is an apocalyptic number.

1545553548431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545553548431 is an equidigital number, since it uses as much as digits as its factorization.

1545553548431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400000, while the sum is 53.

The spelling of 1545553548431 in words is "one trillion, five hundred forty-five billion, five hundred fifty-three million, five hundred forty-eight thousand, four hundred thirty-one".