265696089157 has 4 divisors (see below), whose sum is σ = 269661702496. Its totient is φ = 261730475820.

The previous prime is 265696089149. The next prime is 265696089187. The reversal of 265696089157 is 751980696562.

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 265696089157 - 2³ = 265696089149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265696089137) 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, 1982806569 + ... + 1982806702.

It is an arithmetic number, because the mean of its divisors is an integer number (67415425624).

Almost surely, 2^265696089157 is an apocalyptic number.

It is an amenable number.

265696089157 is a deficient number, since it is larger than the sum of its proper divisors (3965613339).

265696089157 is an equidigital number, since it uses as much as digits as its factorization.

265696089157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965613338.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 265696089157 in words is "two hundred sixty-five billion, six hundred ninety-six million, eighty-nine thousand, one hundred fifty-seven".