1521143226079 has 2 divisors, whose sum is σ = 1521143226080. Its totient is φ = 1521143226078.

The previous prime is 1521143226073. The next prime is 1521143226277. The reversal of 1521143226079 is 9706223411251.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1521143226079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521143226073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760571613039 + 760571613040.

It is an arithmetic number, because the mean of its divisors is an integer number (760571613040).

Almost surely, 2^{1521143226079} is an apocalyptic number.

1521143226079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521143226079 is an equidigital number, since it uses as much as digits as its factorization.

1521143226079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 1521143226079 in words is "one trillion, five hundred twenty-one billion, one hundred forty-three million, two hundred twenty-six thousand, seventy-nine".