275927661505 has 16 divisors (see below), whose sum is σ = 343363797504. Its totient is φ = 212690905920.

The previous prime is 275927661439. The next prime is 275927661533. The reversal of 275927661505 is 505166729572.

It is not a de Polignac number, because 275927661505 - 2¹⁵ = 275927628737 is a prime.

It is a super-2 number, since 2×275927661505² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7221241 + ... + 7259350.

It is an arithmetic number, because the mean of its divisors is an integer number (21460237344).

Almost surely, 2^275927661505 is an apocalyptic number.

It is an amenable number.

275927661505 is a deficient number, since it is larger than the sum of its proper divisors (67436135999).

275927661505 is a wasteful number, since it uses less digits than its factorization.

275927661505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14480736.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 275927661505 in words is "two hundred seventy-five billion, nine hundred twenty-seven million, six hundred sixty-one thousand, five hundred five".