1244154815147 has 2 divisors, whose sum is σ = 1244154815148. Its totient is φ = 1244154815146.

The previous prime is 1244154815143. The next prime is 1244154815149. The reversal of 1244154815147 is 7415184514421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244154815147 - 2² = 1244154815143 is a prime.

Together with 1244154815149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1244154815143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622077407573 + 622077407574.

It is an arithmetic number, because the mean of its divisors is an integer number (622077407574).

Almost surely, 2^{1244154815147} is an apocalyptic number.

1244154815147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244154815147 is an equidigital number, since it uses as much as digits as its factorization.

1244154815147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 716800, while the sum is 47.

The spelling of 1244154815147 in words is "one trillion, two hundred forty-four billion, one hundred fifty-four million, eight hundred fifteen thousand, one hundred forty-seven".