1353855573421 has 16 divisors (see below), whose sum is σ = 1466756120368. Its totient is φ = 1242225331200.

The previous prime is 1353855573409. The next prime is 1353855573479. The reversal of 1353855573421 is 1243755583531.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 29374532100 + 1324481041321 = 171390^2 + 1150861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1353855573421 - 2¹³ = 1353855565229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1353855573121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1295575 + ... + 2094331.

It is an arithmetic number, because the mean of its divisors is an integer number (91672257523).

Almost surely, 2^{1353855573421} is an apocalyptic number.

It is an amenable number.

1353855573421 is a deficient number, since it is larger than the sum of its proper divisors (112900546947).

1353855573421 is a wasteful number, since it uses less digits than its factorization.

1353855573421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799552.

The product of its digits is 7560000, while the sum is 52.

The spelling of 1353855573421 in words is "one trillion, three hundred fifty-three billion, eight hundred fifty-five million, five hundred seventy-three thousand, four hundred twenty-one".