265263765140 has 48 divisors (see below), whose sum is σ = 634116712320. Its totient is φ = 92265655680.

The previous prime is 265263765101. The next prime is 265263765161. The reversal of 265263765140 is 41567362562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26206775 + ... + 26216894.

It is an arithmetic number, because the mean of its divisors is an integer number (13210764840).

Almost surely, 2^265263765140 is an apocalyptic number.

265263765140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265263765140 is an abundant number, since it is smaller than the sum of its proper divisors (368852947180).

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

265263765140 is a wasteful number, since it uses less digits than its factorization.

265263765140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52423712 (or 52423710 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 265263765140 in words is "two hundred sixty-five billion, two hundred sixty-three million, seven hundred sixty-five thousand, one hundred forty".