275842978129 has 16 divisors (see below), whose sum is σ = 298639049040. Its totient is φ = 253811783680.

The previous prime is 275842978121. The next prime is 275842978133. The reversal of 275842978129 is 921879248572.

It can be written as a sum of positive squares in 8 ways, for example, as 3985018129 + 271857960000 = 63127^2 + 521400^2 .

It is a cyclic number.

It is not a de Polignac number, because 275842978129 - 2³ = 275842978121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275842978121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291574 + ... + 797935.

It is an arithmetic number, because the mean of its divisors is an integer number (18664940565).

Almost surely, 2^275842978129 is an apocalyptic number.

It is an amenable number.

275842978129 is a deficient number, since it is larger than the sum of its proper divisors (22796070911).

275842978129 is a wasteful number, since it uses less digits than its factorization.

275842978129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089860.

The product of its digits is 40642560, while the sum is 64.

The spelling of 275842978129 in words is "two hundred seventy-five billion, eight hundred forty-two million, nine hundred seventy-eight thousand, one hundred twenty-nine".