265641232420153 has 4 divisors (see below), whose sum is σ = 265998757632768. Its totient is φ = 265283707207540.

The previous prime is 265641232420141. The next prime is 265641232420271. The reversal of 265641232420153 is 351024232146562.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265641232420153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265641232424153) 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, 178762605193 + ... + 178762606678.

It is an arithmetic number, because the mean of its divisors is an integer number (66499689408192).

Almost surely, 2^{265641232420153} is an apocalyptic number.

It is an amenable number.

265641232420153 is a deficient number, since it is larger than the sum of its proper divisors (357525212615).

265641232420153 is an equidigital number, since it uses as much as digits as its factorization.

265641232420153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357525212614.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 265641232420153 in words is "two hundred sixty-five trillion, six hundred forty-one billion, two hundred thirty-two million, four hundred twenty thousand, one hundred fifty-three".