275423401000 has 128 divisors (see below), whose sum is σ = 703370304000. Its totient is φ = 100112736000.

The previous prime is 275423400997. The next prime is 275423401147. The reversal of 275423401000 is 104324572.

It is a self number, because there is not a number n which added to its sum of digits gives 275423401000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43105806 + ... + 43112194.

It is an arithmetic number, because the mean of its divisors is an integer number (5495080500).

Almost surely, 2^275423401000 is an apocalyptic number.

275423401000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275423401000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351685152000).

275423401000 is an abundant number, since it is smaller than the sum of its proper divisors (427946903000).

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

275423401000 is a wasteful number, since it uses less digits than its factorization.

275423401000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340 (or 10326 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 275423401000 its reverse (104324572), we get a palindrome (275527725572).

The spelling of 275423401000 in words is "two hundred seventy-five billion, four hundred twenty-three million, four hundred one thousand".