354036023455721 has 2 divisors, whose sum is σ = 354036023455722. Its totient is φ = 354036023455720.

The previous prime is 354036023455703. The next prime is 354036023455729. The reversal of 354036023455721 is 127554320630453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192932405580121 + 161103617875600 = 13890011^2 + 12692660^2 .

It is a cyclic number.

It is not a de Polignac number, because 354036023455721 - 2²⁶ = 354035956346857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354036023455721.

It is not a weakly prime, because it can be changed into another prime (354036023455729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177018011727860 + 177018011727861.

It is an arithmetic number, because the mean of its divisors is an integer number (177018011727861).

Almost surely, 2^{354036023455721} is an apocalyptic number.

It is an amenable number.

354036023455721 is a deficient number, since it is larger than the sum of its proper divisors (1).

354036023455721 is an equidigital number, since it uses as much as digits as its factorization.

354036023455721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 50.

The spelling of 354036023455721 in words is "three hundred fifty-four trillion, thirty-six billion, twenty-three million, four hundred fifty-five thousand, seven hundred twenty-one".