121465144545 has 32 divisors (see below), whose sum is σ = 198554146560. Its totient is φ = 63393116160.

The previous prime is 121465144469. The next prime is 121465144553. The reversal of 121465144545 is 545441564121.

It is not a de Polignac number, because 121465144545 - 2¹⁷ = 121465013473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121465144497 and 121465144506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339501 + ... + 598490.

It is an arithmetic number, because the mean of its divisors is an integer number (6204817080).

Almost surely, 2^121465144545 is an apocalyptic number.

121465144545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121465144545 is a deficient number, since it is larger than the sum of its proper divisors (77089002015).

121465144545 is an equidigital number, since it uses as much as digits as its factorization.

121465144545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938185.

The product of its digits is 384000, while the sum is 42.

The spelling of 121465144545 in words is "one hundred twenty-one billion, four hundred sixty-five million, one hundred forty-four thousand, five hundred forty-five".