2421555543252 has 72 divisors (see below), whose sum is σ = 6127580659200. Its totient is φ = 806338231488.

The previous prime is 2421555543221. The next prime is 2421555543271. The reversal of 2421555543252 is 2523455551242.

2421555543252 is a `hidden beast` number, since 2 + 4 + 2 + 1 + 5 + 55 + 543 + 2 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2421555543198 and 2421555543207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151273033 + ... + 151289039.

Almost surely, 2^{2421555543252} is an apocalyptic number.

It is an amenable number.

2421555543252 is an abundant number, since it is smaller than the sum of its proper divisors (3706025115948).

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

2421555543252 is a wasteful number, since it uses less digits than its factorization.

2421555543252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20165 (or 20160 counting only the distinct ones).

The product of its digits is 2400000, while the sum is 45.

The spelling of 2421555543252 in words is "two trillion, four hundred twenty-one billion, five hundred fifty-five million, five hundred forty-three thousand, two hundred fifty-two".