265153306543240 has 32 divisors (see below), whose sum is σ = 597697703060760. Its totient is φ = 105865275801600.

The previous prime is 265153306543201. The next prime is 265153306543243. The reversal of 265153306543240 is 42345603351562.

It can be written as a sum of positive squares in 4 ways, for example, as 151477066990404 + 113676239552836 = 12307602^2 + 10661906^2 .

It is not an unprimeable number, because it can be changed into a prime (265153306543243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6126441081 + ... + 6126484360.

Almost surely, 2^{265153306543240} is an apocalyptic number.

265153306543240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265153306543240 is an abundant number, since it is smaller than the sum of its proper divisors (332544396517520).

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

265153306543240 is a wasteful number, since it uses less digits than its factorization.

265153306543240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12252925993 (or 12252925989 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 265153306543240 in words is "two hundred sixty-five trillion, one hundred fifty-three billion, three hundred six million, five hundred forty-three thousand, two hundred forty".