1415551555121 has 16 divisors (see below), whose sum is σ = 1594891454976. Its totient is φ = 1244697600000.

The previous prime is 1415551555109. The next prime is 1415551555127. The reversal of 1415551555121 is 1215551555141.

It is a cyclic number.

It is not a de Polignac number, because 1415551555121 - 2¹⁰ = 1415551554097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1415551555127) 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, 443600 + ... + 1740081.

It is an arithmetic number, because the mean of its divisors is an integer number (99680715936).

Almost surely, 2^{1415551555121} is an apocalyptic number.

1415551555121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1415551555121 is a deficient number, since it is larger than the sum of its proper divisors (179339899855).

1415551555121 is a wasteful number, since it uses less digits than its factorization.

1415551555121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185624.

The product of its digits is 125000, while the sum is 41.

The spelling of 1415551555121 in words is "one trillion, four hundred fifteen billion, five hundred fifty-one million, five hundred fifty-five thousand, one hundred twenty-one".