10505545405 has 8 divisors (see below), whose sum is σ = 12620230200. Its totient is φ = 8395385856.

The previous prime is 10505545399. The next prime is 10505545429. The reversal of 10505545405 is 50454550501.

It can be written as a sum of positive squares in 4 ways, for example, as 469112281 + 10036433124 = 21659^2 + 100182^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10505545405 is a prime.

It is a super-2 number, since 2×10505545405² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 1126200 + ... + 1135489.

It is an arithmetic number, because the mean of its divisors is an integer number (1577528775).

Almost surely, 2^10505545405 is an apocalyptic number.

It is an amenable number.

10505545405 is a deficient number, since it is larger than the sum of its proper divisors (2114684795).

10505545405 is an equidigital number, since it uses as much as digits as its factorization.

10505545405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262623.

The product of its (nonzero) digits is 50000, while the sum is 34.

It can be divided in two parts, 1050 and 5545405, that added together give a palindrome (5546455).

The spelling of 10505545405 in words is "ten billion, five hundred five million, five hundred forty-five thousand, four hundred five".