121854061453 has 2 divisors, whose sum is σ = 121854061454. Its totient is φ = 121854061452.

The previous prime is 121854061447. The next prime is 121854061463. The reversal of 121854061453 is 354160458121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121634932644 + 219128809 = 348762^2 + 14803^2 .

It is a cyclic number.

It is not a de Polignac number, because 121854061453 - 2⁹ = 121854060941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121854061463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60927030726 + 60927030727.

It is an arithmetic number, because the mean of its divisors is an integer number (60927030727).

Almost surely, 2^121854061453 is an apocalyptic number.

It is an amenable number.

121854061453 is a deficient number, since it is larger than the sum of its proper divisors (1).

121854061453 is an equidigital number, since it uses as much as digits as its factorization.

121854061453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 121854061453 in words is "one hundred twenty-one billion, eight hundred fifty-four million, sixty-one thousand, four hundred fifty-three".