275516878965121 has 4 divisors (see below), whose sum is σ = 275562112410544. Its totient is φ = 275471645519700.

The previous prime is 275516878965101. The next prime is 275516878965151. The reversal of 275516878965121 is 121569878615572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 275516878965121 - 2⁵ = 275516878965089 is a prime.

It is a super-2 number, since 2×275516878965121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275516878965101) 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 3 ways as a sum of consecutive naturals, for example, 22616713575 + ... + 22616725756.

It is an arithmetic number, because the mean of its divisors is an integer number (68890528102636).

Almost surely, 2^{275516878965121} is an apocalyptic number.

It is an amenable number.

275516878965121 is a deficient number, since it is larger than the sum of its proper divisors (45233445423).

275516878965121 is an equidigital number, since it uses as much as digits as its factorization.

275516878965121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45233445422.

The product of its digits is 508032000, while the sum is 73.

The spelling of 275516878965121 in words is "two hundred seventy-five trillion, five hundred sixteen billion, eight hundred seventy-eight million, nine hundred sixty-five thousand, one hundred twenty-one".