1979273516517 has 24 divisors (see below), whose sum is σ = 3283005516960. Its totient is φ = 1136424984480.

The previous prime is 1979273516501. The next prime is 1979273516531. The reversal of 1979273516517 is 7156153729791.

1979273516517 is a `hidden beast` number, since 1 + 9 + 79 + 2 + 7 + 35 + 16 + 517 = 666.

It is not a de Polignac number, because 1979273516517 - 2⁴ = 1979273516501 is a prime.

It is a super-2 number, since 2×1979273516517² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979273506517) 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 in 23 ways as a sum of consecutive naturals, for example, 526120798 + ... + 526124559.

It is an arithmetic number, because the mean of its divisors is an integer number (136791896540).

Almost surely, 2^{1979273516517} is an apocalyptic number.

It is an amenable number.

1979273516517 is a deficient number, since it is larger than the sum of its proper divisors (1303732000443).

1979273516517 is a wasteful number, since it uses less digits than its factorization.

1979273516517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052245393 (or 1052245390 counting only the distinct ones).

The product of its digits is 25004700, while the sum is 63.

The spelling of 1979273516517 in words is "one trillion, nine hundred seventy-nine billion, two hundred seventy-three million, five hundred sixteen thousand, five hundred seventeen".