10821727515554 has 8 divisors (see below), whose sum is σ = 16671309956508. Its totient is φ = 5264624196720.

The previous prime is 10821727515541. The next prime is 10821727515601. The reversal of 10821727515554 is 45551572712801.

It can be written as a sum of positive squares in 2 ways, for example, as 7894565814529 + 2927161701025 = 2809727^2 + 1710895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 10821727515496 and 10821727515505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73119780437 + ... + 73119780584.

Almost surely, 2^{10821727515554} is an apocalyptic number.

10821727515554 is a deficient number, since it is larger than the sum of its proper divisors (5849582440954).

10821727515554 is a wasteful number, since it uses less digits than its factorization.

10821727515554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146239561060.

The product of its (nonzero) digits is 3920000, while the sum is 53.

The spelling of 10821727515554 in words is "ten trillion, eight hundred twenty-one billion, seven hundred twenty-seven million, five hundred fifteen thousand, five hundred fifty-four".