10515223452 has 24 divisors (see below), whose sum is σ = 25978787856. Its totient is φ = 3298893568.

The previous prime is 10515223451. The next prime is 10515223457. The reversal of 10515223452 is 25432251501.

It is a super-2 number, since 2×10515223452² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10515223451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25772403 + ... + 25772810.

It is an arithmetic number, because the mean of its divisors is an integer number (1082449494).

Almost surely, 2^10515223452 is an apocalyptic number.

10515223452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10515223452 is an abundant number, since it is smaller than the sum of its proper divisors (15463564404).

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

10515223452 is a wasteful number, since it uses less digits than its factorization.

10515223452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51545237 (or 51545235 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 10515223452 its reverse (25432251501), we get a palindrome (35947474953).

The spelling of 10515223452 in words is "ten billion, five hundred fifteen million, two hundred twenty-three thousand, four hundred fifty-two".