2151043542544 has 20 divisors (see below), whose sum is σ = 4488235084396. Its totient is φ = 992789327232.

The previous prime is 2151043542491. The next prime is 2151043542553. The reversal of 2151043542544 is 4452453401512.

It can be written as a sum of positive squares in 2 ways, for example, as 1252187856144 + 898855686400 = 1119012^2 + 948080^2 .

It is a super-2 number, since 2×2151043542544² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2151043542497 and 2151043542506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5170777539 + ... + 5170777954.

Almost surely, 2^{2151043542544} is an apocalyptic number.

It is an amenable number.

2151043542544 is an abundant number, since it is smaller than the sum of its proper divisors (2337191541852).

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

2151043542544 is a wasteful number, since it uses less digits than its factorization.

2151043542544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10341555514 (or 10341555508 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 2151043542544 in words is "two trillion, one hundred fifty-one billion, forty-three million, five hundred forty-two thousand, five hundred forty-four".