2543811651072 has 280 divisors, whose sum is σ = 7676274698136. Its totient is φ = 841730973696.

The previous prime is 2543811651049. The next prime is 2543811651083. The reversal of 2543811651072 is 2701561183452.

2543811651072 is a `hidden beast` number, since 2 + 5 + 4 + 381 + 165 + 107 + 2 = 666.

It is a super-2 number, since 2×2543811651072² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 51110103 + ... + 51159849.

Almost surely, 2^{2543811651072} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543811651072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3838137349068).

2543811651072 is an abundant number, since it is smaller than the sum of its proper divisors (5132463047064).

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

2543811651072 is an frugal number, since it uses more digits than its factorization.

2543811651072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49920 (or 49889 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 2543811651072 in words is "two trillion, five hundred forty-three billion, eight hundred eleven million, six hundred fifty-one thousand, seventy-two".