265620536081 has 8 divisors (see below), whose sum is σ = 269372980800. Its totient is φ = 261868405680.

The previous prime is 265620535969. The next prime is 265620536147. The reversal of 265620536081 is 180635026562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265620536081 - 2¹⁰ = 265620535057 is a prime.

It is a super-2 number, since 2×265620536081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265620536681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2014190 + ... + 2142008.

It is an arithmetic number, because the mean of its divisors is an integer number (33671622600).

Almost surely, 2^265620536081 is an apocalyptic number.

It is an amenable number.

265620536081 is a deficient number, since it is larger than the sum of its proper divisors (3752444719).

265620536081 is a wasteful number, since it uses less digits than its factorization.

265620536081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157159.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 265620536081 in words is "two hundred sixty-five billion, six hundred twenty million, five hundred thirty-six thousand, eighty-one".