1204021553405 has 32 divisors (see below), whose sum is σ = 1619701187328. Its totient is φ = 851497228800.

The previous prime is 1204021553387. The next prime is 1204021553513. The reversal of 1204021553405 is 5043551204021.

It is a de Polignac number, because none of the positive numbers 2^k-1204021553405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3398600 + ... + 3736110.

It is an arithmetic number, because the mean of its divisors is an integer number (50615662104).

Almost surely, 2^{1204021553405} is an apocalyptic number.

It is an amenable number.

1204021553405 is a deficient number, since it is larger than the sum of its proper divisors (415679633923).

1204021553405 is a wasteful number, since it uses less digits than its factorization.

1204021553405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339317.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1204021553405 its reverse (5043551204021), we get a palindrome (6247572757426).

The spelling of 1204021553405 in words is "one trillion, two hundred four billion, twenty-one million, five hundred fifty-three thousand, four hundred five".