354164786021 has 2 divisors, whose sum is σ = 354164786022. Its totient is φ = 354164786020.

The previous prime is 354164785999. The next prime is 354164786051. The reversal of 354164786021 is 120687461453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265503172900 + 88661613121 = 515270^2 + 297761^2 .

It is a cyclic number.

It is not a de Polignac number, because 354164786021 - 2⁶ = 354164785957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354164786051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177082393010 + 177082393011.

It is an arithmetic number, because the mean of its divisors is an integer number (177082393011).

Almost surely, 2^354164786021 is an apocalyptic number.

It is an amenable number.

354164786021 is a deficient number, since it is larger than the sum of its proper divisors (1).

354164786021 is an equidigital number, since it uses as much as digits as its factorization.

354164786021 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 47.

The spelling of 354164786021 in words is "three hundred fifty-four billion, one hundred sixty-four million, seven hundred eighty-six thousand, twenty-one".