1253404350240 has 96 divisors (see below), whose sum is σ = 4512255672960. Its totient is φ = 286492422144.

The previous prime is 1253404350221. The next prime is 1253404350241. The reversal of 1253404350240 is 420534043521.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1253404350241) 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, 186515145 + ... + 186521864.

It is an arithmetic number, because the mean of its divisors is an integer number (47002663260).

Almost surely, 2^{1253404350240} is an apocalyptic number.

1253404350240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253404350240 is an abundant number, since it is smaller than the sum of its proper divisors (3258851322720).

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

1253404350240 is a wasteful number, since it uses less digits than its factorization.

1253404350240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373037034 (or 373037026 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 1253404350240 its reverse (420534043521), we get a palindrome (1673938393761).

The spelling of 1253404350240 in words is "one trillion, two hundred fifty-three billion, four hundred four million, three hundred fifty thousand, two hundred forty".