20543140256328 has 48 divisors (see below), whose sum is σ = 55681863728400. Its totient is φ = 6842274378720.

The previous prime is 20543140256297. The next prime is 20543140256333. The reversal of 20543140256328 is 82365204134502.

20543140256328 is a `hidden beast` number, since 2 + 0 + 5 + 4 + 3 + 1 + 4 + 0 + 2 + 5 + 632 + 8 = 666.

It is a super-2 number, since 2×20543140256328² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113222058 + ... + 113403353.

It is an arithmetic number, because the mean of its divisors is an integer number (1160038827675).

Almost surely, 2^{20543140256328} is an apocalyptic number.

It is an amenable number.

20543140256328 is an abundant number, since it is smaller than the sum of its proper divisors (35138723472072).

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

20543140256328 is a wasteful number, since it uses less digits than its factorization.

20543140256328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226626682 (or 226626675 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 20543140256328 in words is "twenty trillion, five hundred forty-three billion, one hundred forty million, two hundred fifty-six thousand, three hundred twenty-eight".