1243863167427 has 32 divisors (see below), whose sum is σ = 1848015509760. Its totient is φ = 826880503680.

The previous prime is 1243863167423. The next prime is 1243863167471. The reversal of 1243863167427 is 7247613683421.

1243863167427 is a `hidden beast` number, since 1 + 2 + 438 + 6 + 3 + 167 + 42 + 7 = 666.

It is not a de Polignac number, because 1243863167427 - 2² = 1243863167423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243863167423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13918428 + ... + 14007510.

It is an arithmetic number, because the mean of its divisors is an integer number (57750484680).

Almost surely, 2^{1243863167427} is an apocalyptic number.

1243863167427 is a deficient number, since it is larger than the sum of its proper divisors (604152342333).

1243863167427 is an equidigital number, since it uses as much as digits as its factorization.

1243863167427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90560 (or 90554 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 1243863167427 in words is "one trillion, two hundred forty-three billion, eight hundred sixty-three million, one hundred sixty-seven thousand, four hundred twenty-seven".