275247423661 has 8 divisors (see below), whose sum is σ = 321261431040. Its totient is φ = 230906653008.

The previous prime is 275247423643. The next prime is 275247423673. The reversal of 275247423661 is 166324742572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 275247423661 - 2⁷ = 275247423533 is a prime.

It is a super-2 number, since 2×275247423661² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275247423641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418308826 + ... + 418309483.

It is an arithmetic number, because the mean of its divisors is an integer number (40157678880).

Almost surely, 2^275247423661 is an apocalyptic number.

It is an amenable number.

275247423661 is a deficient number, since it is larger than the sum of its proper divisors (46014007379).

275247423661 is an equidigital number, since it uses as much as digits as its factorization.

275247423661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836618363.

The product of its digits is 3386880, while the sum is 49.

The spelling of 275247423661 in words is "two hundred seventy-five billion, two hundred forty-seven million, four hundred twenty-three thousand, six hundred sixty-one".