180154037224921 has 2 divisors, whose sum is σ = 180154037224922. Its totient is φ = 180154037224920.

The previous prime is 180154037224913. The next prime is 180154037224927. The reversal of 180154037224921 is 129422730451081.

180154037224921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161499973893696 + 18654063331225 = 12708264^2 + 4319035^2 .

It is a cyclic number.

It is not a de Polignac number, because 180154037224921 - 2³ = 180154037224913 is a prime.

It is not a weakly prime, because it can be changed into another prime (180154037224927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90077018612460 + 90077018612461.

It is an arithmetic number, because the mean of its divisors is an integer number (90077018612461).

Almost surely, 2^{180154037224921} is an apocalyptic number.

It is an amenable number.

180154037224921 is a deficient number, since it is larger than the sum of its proper divisors (1).

180154037224921 is an equidigital number, since it uses as much as digits as its factorization.

180154037224921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 180154037224921 in words is "one hundred eighty trillion, one hundred fifty-four billion, thirty-seven million, two hundred twenty-four thousand, nine hundred twenty-one".