265330146989 has 4 divisors (see below), whose sum is σ = 265525100700. Its totient is φ = 265135193280.

The previous prime is 265330146929. The next prime is 265330147013. The reversal of 265330146989 is 989641033562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132156242089 + 133173904900 = 363533^2 + 364930^2 .

It is a cyclic number.

It is not a de Polignac number, because 265330146989 - 2⁸ = 265330146733 is a prime.

It is a super-2 number, since 2×265330146989² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265330146929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97474814 + ... + 97477535.

It is an arithmetic number, because the mean of its divisors is an integer number (66381275175).

Almost surely, 2^265330146989 is an apocalyptic number.

It is an amenable number.

265330146989 is a deficient number, since it is larger than the sum of its proper divisors (194953711).

265330146989 is a wasteful number, since it uses less digits than its factorization.

265330146989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194953710.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 265330146989 in words is "two hundred sixty-five billion, three hundred thirty million, one hundred forty-six thousand, nine hundred eighty-nine".