10520405444 has 12 divisors (see below), whose sum is σ = 18415339068. Its totient is φ = 5258880000.

The previous prime is 10520405419. The next prime is 10520405453. The reversal of 10520405444 is 44450402501.

It can be written as a sum of positive squares in 2 ways, for example, as 994645444 + 9525760000 = 31538^2 + 97600^2 .

It is a super-2 number, since 2×10520405444² (a number of 21 digits) contains 22 as substring.

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, 312677 + ... + 344684.

It is an arithmetic number, because the mean of its divisors is an integer number (1534611589).

Almost surely, 2^10520405444 is an apocalyptic number.

It is an amenable number.

10520405444 is a deficient number, since it is larger than the sum of its proper divisors (7894933624).

10520405444 is a wasteful number, since it uses less digits than its factorization.

10520405444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661366 (or 661364 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 10520405444 its reverse (44450402501), we get a palindrome (54970807945).

The spelling of 10520405444 in words is "ten billion, five hundred twenty million, four hundred five thousand, four hundred forty-four".