2721535853421 has 48 divisors (see below), whose sum is σ = 4607950975488. Its totient is φ = 1412847928800.

The previous prime is 2721535853383. The next prime is 2721535853497. The reversal of 2721535853421 is 1243585351272.

It is a happy number.

2721535853421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2721535853421 - 2¹⁰ = 2721535852397 is a prime.

It is a super-5 number, since 5×2721535853421⁵ (a number of 63 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721535853221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1886346 + ... + 3000228.

It is an arithmetic number, because the mean of its divisors is an integer number (95998978656).

Almost surely, 2^{2721535853421} is an apocalyptic number.

2721535853421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2721535853421 is a deficient number, since it is larger than the sum of its proper divisors (1886415122067).

2721535853421 is a wasteful number, since it uses less digits than its factorization.

2721535853421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115422 (or 1115415 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 48.

The spelling of 2721535853421 in words is "two trillion, seven hundred twenty-one billion, five hundred thirty-five million, eight hundred fifty-three thousand, four hundred twenty-one".