275391619540 has 48 divisors (see below), whose sum is σ = 587883018240. Its totient is φ = 108348542720.

The previous prime is 275391619513. The next prime is 275391619597. The reversal of 275391619540 is 45916193572.

It is a super-2 number, since 2×275391619540² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65032 + ... + 744991.

It is an arithmetic number, because the mean of its divisors is an integer number (12247562880).

Almost surely, 2^275391619540 is an apocalyptic number.

275391619540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275391619540 is an abundant number, since it is smaller than the sum of its proper divisors (312491398700).

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

275391619540 is a wasteful number, since it uses less digits than its factorization.

275391619540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810312 (or 810310 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 275391619540 in words is "two hundred seventy-five billion, three hundred ninety-one million, six hundred nineteen thousand, five hundred forty".