1351103615421 has 16 divisors (see below), whose sum is σ = 2059247382528. Its totient is φ = 771900649200.

The previous prime is 1351103615399. The next prime is 1351103615423. The reversal of 1351103615421 is 1245163011531.

It is a happy number.

It is not a de Polignac number, because 1351103615421 - 2²² = 1351099421117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351103615423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6501925 + ... + 6706506.

It is an arithmetic number, because the mean of its divisors is an integer number (128702961408).

Almost surely, 2^{1351103615421} is an apocalyptic number.

It is an amenable number.

1351103615421 is a deficient number, since it is larger than the sum of its proper divisors (708143767107).

1351103615421 is a wasteful number, since it uses less digits than its factorization.

1351103615421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13213312.

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 1351103615421 its reverse (1245163011531), we get a palindrome (2596266626952).

The spelling of 1351103615421 in words is "one trillion, three hundred fifty-one billion, one hundred three million, six hundred fifteen thousand, four hundred twenty-one".