1421003353544 has 16 divisors (see below), whose sum is σ = 2664840671820. Its totient is φ = 710379174400.

The previous prime is 1421003353543. The next prime is 1421003353547. The reversal of 1421003353544 is 4453533001241.

It can be written as a sum of positive squares in 2 ways, for example, as 866034972100 + 554968381444 = 930610^2 + 744962^2 .

It is not an unprimeable number, because it can be changed into a prime (1421003353543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15263489 + ... + 15356304.

Almost surely, 2^{1421003353544} is an apocalyptic number.

It is an amenable number.

1421003353544 is a deficient number, since it is larger than the sum of its proper divisors (1243837318276).

1421003353544 is a wasteful number, since it uses less digits than its factorization.

1421003353544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30625600 (or 30625596 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 1421003353544 its reverse (4453533001241), we get a palindrome (5874536354785).

The spelling of 1421003353544 in words is "one trillion, four hundred twenty-one billion, three million, three hundred fifty-three thousand, five hundred forty-four".