253275103440 has 60 divisors (see below), whose sum is σ = 850582224804. Its totient is φ = 67540027392.

The previous prime is 253275103429. The next prime is 253275103489. The reversal of 253275103440 is 44301572352.

253275103440 is a `hidden beast` number, since 2 + 53 + 27 + 510 + 34 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 114238592064 + 139036511376 = 337992^2 + 372876^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 253275103395 and 253275103404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175884769 + ... + 175886208.

Almost surely, 2^253275103440 is an apocalyptic number.

253275103440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253275103440 is an abundant number, since it is smaller than the sum of its proper divisors (597307121364).

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

253275103440 is a wasteful number, since it uses less digits than its factorization.

253275103440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351770996 (or 351770987 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

Adding to 253275103440 its reverse (44301572352), we get a palindrome (297576675792).

The spelling of 253275103440 in words is "two hundred fifty-three billion, two hundred seventy-five million, one hundred three thousand, four hundred forty".