245023251140240 has 20 divisors (see below), whose sum is σ = 569679058901244. Its totient is φ = 98009300456064.

The previous prime is 245023251140219. The next prime is 245023251140281. The reversal of 245023251140240 is 42041152320542.

It can be written as a sum of positive squares in 2 ways, for example, as 123950992355584 + 121072258784656 = 11133328^2 + 11003284^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 245023251140240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1531395319547 + ... + 1531395319706.

Almost surely, 2^{245023251140240} is an apocalyptic number.

245023251140240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245023251140240 is an abundant number, since it is smaller than the sum of its proper divisors (324655807761004).

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

245023251140240 is a wasteful number, since it uses less digits than its factorization.

245023251140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062790639266 (or 3062790639260 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 245023251140240 in words is "two hundred forty-five trillion, twenty-three billion, two hundred fifty-one million, one hundred forty thousand, two hundred forty".