265121742060 has 384 divisors, whose sum is σ = 991446220800. Its totient is φ = 57536593920.

The previous prime is 265121742059. The next prime is 265121742097. The reversal of 265121742060 is 60247121562.

It is a happy number.

265121742060 is a `hidden beast` number, since 265 + 121 + 74 + 206 + 0 = 666.

It is a super-2 number, since 2×265121742060² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6189196 + ... + 6231884.

It is an arithmetic number, because the mean of its divisors is an integer number (2581891200).

Almost surely, 2^265121742060 is an apocalyptic number.

265121742060 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 265121742060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495723110400).

265121742060 is an abundant number, since it is smaller than the sum of its proper divisors (726324478740).

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

265121742060 is a wasteful number, since it uses less digits than its factorization.

265121742060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42798 (or 42790 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 265121742060 in words is "two hundred sixty-five billion, one hundred twenty-one million, seven hundred forty-two thousand, sixty".