265273403351040 has 2688 divisors, whose sum is σ = 1102693463359488. Its totient is φ = 57736031109120.

The previous prime is 265273403351023. The next prime is 265273403351093. The reversal of 265273403351040 is 40153304372562.

It is a happy number.

265273403351040 is a `hidden beast` number, since 2 + 6 + 5 + 27 + 3 + 40 + 33 + 510 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (2688).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1588463493037 + ... + 1588463493203.

It is an arithmetic number, because the mean of its divisors is an integer number (410228222976).

Almost surely, 2^{265273403351040} is an apocalyptic number.

265273403351040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265273403351040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551346731679744).

265273403351040 is an abundant number, since it is smaller than the sum of its proper divisors (837420060008448).

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

265273403351040 is a wasteful number, since it uses less digits than its factorization.

265273403351040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 265273403351040 in words is "two hundred sixty-five trillion, two hundred seventy-three billion, four hundred three million, three hundred fifty-one thousand, forty".