265890751213 has 4 divisors (see below), whose sum is σ = 265892855680. Its totient is φ = 265888646748.

The previous prime is 265890751207. The next prime is 265890751237. The reversal of 265890751213 is 312157098562.

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 not a de Polignac number, because 265890751213 - 2²¹ = 265888654061 is a prime.

It is a super-2 number, since 2×265890751213² (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 (265890751283) 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, 849723 + ... + 1119736.

It is an arithmetic number, because the mean of its divisors is an integer number (66473213920).

Almost surely, 2^265890751213 is an apocalyptic number.

It is an amenable number.

265890751213 is a deficient number, since it is larger than the sum of its proper divisors (2104467).

265890751213 is a wasteful number, since it uses less digits than its factorization.

265890751213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104466.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 265890751213 in words is "two hundred sixty-five billion, eight hundred ninety million, seven hundred fifty-one thousand, two hundred thirteen".