10513451172 has 72 divisors (see below), whose sum is σ = 28574847840. Its totient is φ = 2999808000.

The previous prime is 10513451147. The next prime is 10513451189. The reversal of 10513451172 is 27115431501.

It is a super-2 number, since 2×10513451172² (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 23 ways as a sum of consecutive naturals, for example, 440547 + ... + 463797.

Almost surely, 2^10513451172 is an apocalyptic number.

10513451172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10513451172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14287423920).

10513451172 is an abundant number, since it is smaller than the sum of its proper divisors (18061396668).

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

10513451172 is a wasteful number, since it uses less digits than its factorization.

10513451172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24041 (or 24032 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 10513451172 its reverse (27115431501), we get a palindrome (37628882673).

The spelling of 10513451172 in words is "ten billion, five hundred thirteen million, four hundred fifty-one thousand, one hundred seventy-two".