10545421500 has 144 divisors (see below), whose sum is σ = 33315740640. Its totient is φ = 2808019200.

The previous prime is 10545421489. The next prime is 10545421507. The reversal of 10545421500 is 512454501.

10545421500 is a `hidden beast` number, since 105 + 4 + 54 + 2 + 1 + 500 = 666.

It is a super-2 number, since 2×10545421500² (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 (10545421507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4287271 + ... + 4289729.

It is an arithmetic number, because the mean of its divisors is an integer number (231359310).

Almost surely, 2^10545421500 is an apocalyptic number.

10545421500 is a gapful number since it is divisible by the number (10) 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 10545421500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16657870320).

10545421500 is an abundant number, since it is smaller than the sum of its proper divisors (22770319140).

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

10545421500 is a wasteful number, since it uses less digits than its factorization.

10545421500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 10545421500 in words is "ten billion, five hundred forty-five million, four hundred twenty-one thousand, five hundred".