154650545060021 has 2 divisors, whose sum is σ = 154650545060022. Its totient is φ = 154650545060020.

The previous prime is 154650545059991. The next prime is 154650545060041. The reversal of 154650545060021 is 120060545056451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100782123340900 + 53868421719121 = 10039030^2 + 7339511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154650545060021 is a prime.

It is a super-3 number, since 3×154650545060021³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154650545060041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77325272530010 + 77325272530011.

It is an arithmetic number, because the mean of its divisors is an integer number (77325272530011).

Almost surely, 2^{154650545060021} is an apocalyptic number.

It is an amenable number.

154650545060021 is a deficient number, since it is larger than the sum of its proper divisors (1).

154650545060021 is an equidigital number, since it uses as much as digits as its factorization.

154650545060021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 154650545060021 in words is "one hundred fifty-four trillion, six hundred fifty billion, five hundred forty-five million, sixty thousand, twenty-one".