10515143551542 has 128 divisors (see below), whose sum is σ = 25672826880000. Its totient is φ = 2866462250400.

The previous prime is 10515143551537. The next prime is 10515143551553. The reversal of 10515143551542 is 24515534151501.

10515143551542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10515143551542² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 10515143551494 and 10515143551503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3368959 + ... + 5690357.

It is an arithmetic number, because the mean of its divisors is an integer number (200568960000).

Almost surely, 2^{10515143551542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10515143551542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12836413440000).

10515143551542 is an abundant number, since it is smaller than the sum of its proper divisors (15157683328458).

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

10515143551542 is a wasteful number, since it uses less digits than its factorization.

10515143551542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321527 (or 2321513 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 42.

The spelling of 10515143551542 in words is "ten trillion, five hundred fifteen billion, one hundred forty-three million, five hundred fifty-one thousand, five hundred forty-two".