102723481265 has 4 divisors (see below), whose sum is σ = 123268177524. Its totient is φ = 82178785008.

The previous prime is 102723481207. The next prime is 102723481327. The reversal of 102723481265 is 562184327201.

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 60914682481 + 41808798784 = 246809^2 + 204472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102723481265 is a prime.

It is a super-2 number, since 2×102723481265² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10272348122 + ... + 10272348131.

It is an arithmetic number, because the mean of its divisors is an integer number (30817044381).

Almost surely, 2^102723481265 is an apocalyptic number.

It is an amenable number.

102723481265 is a deficient number, since it is larger than the sum of its proper divisors (20544696259).

102723481265 is an equidigital number, since it uses as much as digits as its factorization.

102723481265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20544696258.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 102723481265 in words is "one hundred two billion, seven hundred twenty-three million, four hundred eighty-one thousand, two hundred sixty-five".