100260123505 has 8 divisors (see below), whose sum is σ = 120314270952. Its totient is φ = 80206683648.

The previous prime is 100260123487. The next prime is 100260123529. The reversal of 100260123505 is 505321062001.

It can be written as a sum of positive squares in 4 ways, for example, as 64430176561 + 35829946944 = 253831^2 + 189288^2 .

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 100260123505 - 2¹⁹ = 100259599217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100260123505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212929 + ... + 495841.

It is an arithmetic number, because the mean of its divisors is an integer number (15039283869).

Almost surely, 2^100260123505 is an apocalyptic number.

It is an amenable number.

100260123505 is a deficient number, since it is larger than the sum of its proper divisors (20054147447).

100260123505 is an equidigital number, since it uses as much as digits as its factorization.

100260123505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353795.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 100260123505 its reverse (505321062001), we get a palindrome (605581185506).

The spelling of 100260123505 in words is "one hundred billion, two hundred sixty million, one hundred twenty-three thousand, five hundred five".