154135665563279 has 2 divisors, whose sum is σ = 154135665563280. Its totient is φ = 154135665563278.

The previous prime is 154135665563219. The next prime is 154135665563293. The reversal of 154135665563279 is 972365566531451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154135665563279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154135665563219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77067832781639 + 77067832781640.

It is an arithmetic number, because the mean of its divisors is an integer number (77067832781640).

Almost surely, 2^{154135665563279} is an apocalyptic number.

154135665563279 is a deficient number, since it is larger than the sum of its proper divisors (1).

154135665563279 is an equidigital number, since it uses as much as digits as its factorization.

154135665563279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360000, while the sum is 68.

The spelling of 154135665563279 in words is "one hundred fifty-four trillion, one hundred thirty-five billion, six hundred sixty-five million, five hundred sixty-three thousand, two hundred seventy-nine".