275530416640 has 40 divisors (see below), whose sum is σ = 660627231660. Its totient is φ = 110212165632.

The previous prime is 275530416631. The next prime is 275530416643. The reversal of 275530416640 is 46614035572.

It can be written as a sum of positive squares in 2 ways, for example, as 261210943744 + 14319472896 = 511088^2 + 119664^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (275530416643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53811975 + ... + 53817094.

Almost surely, 2^275530416640 is an apocalyptic number.

275530416640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275530416640 is an abundant number, since it is smaller than the sum of its proper divisors (385096815020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

275530416640 is an equidigital number, since it uses as much as digits as its factorization.

275530416640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107629092 (or 107629076 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 275530416640 in words is "two hundred seventy-five billion, five hundred thirty million, four hundred sixteen thousand, six hundred forty".