154610362123421 has 2 divisors, whose sum is σ = 154610362123422. Its totient is φ = 154610362123420.

The previous prime is 154610362123417. The next prime is 154610362123447. The reversal of 154610362123421 is 124321263016451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132585690751396 + 22024671372025 = 11514586^2 + 4693045^2 .

It is an emirp because it is prime and its reverse (124321263016451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154610362123421 - 2² = 154610362123417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154610362120421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77305181061710 + 77305181061711.

It is an arithmetic number, because the mean of its divisors is an integer number (77305181061711).

Almost surely, 2^{154610362123421} is an apocalyptic number.

It is an amenable number.

154610362123421 is a deficient number, since it is larger than the sum of its proper divisors (1).

154610362123421 is an equidigital number, since it uses as much as digits as its factorization.

154610362123421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 154610362123421 in words is "one hundred fifty-four trillion, six hundred ten billion, three hundred sixty-two million, one hundred twenty-three thousand, four hundred twenty-one".