10520505512 has 64 divisors (see below), whose sum is σ = 21998770560. Its totient is φ = 4676089600.

The previous prime is 10520505511. The next prime is 10520505533. The reversal of 10520505512 is 21550502501.

It is a super-2 number, since 2×10520505512² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10520505511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1446878 + ... + 1454130.

It is an arithmetic number, because the mean of its divisors is an integer number (343730790).

Almost surely, 2^10520505512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10520505512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10999385280).

10520505512 is an abundant number, since it is smaller than the sum of its proper divisors (11478265048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10520505512 is a wasteful number, since it uses less digits than its factorization.

10520505512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634 (or 7630 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 10520505512 in words is "ten billion, five hundred twenty million, five hundred five thousand, five hundred twelve".