147834668621 has 2 divisors, whose sum is σ = 147834668622. Its totient is φ = 147834668620.

The previous prime is 147834668581. The next prime is 147834668629. The reversal of 147834668621 is 126866438741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74972463721 + 72862204900 = 273811^2 + 269930^2 .

It is a cyclic number.

It is not a de Polignac number, because 147834668621 - 2¹⁴ = 147834652237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147834668629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73917334310 + 73917334311.

It is an arithmetic number, because the mean of its divisors is an integer number (73917334311).

Almost surely, 2^147834668621 is an apocalyptic number.

It is an amenable number.

147834668621 is a deficient number, since it is larger than the sum of its proper divisors (1).

147834668621 is an equidigital number, since it uses as much as digits as its factorization.

147834668621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 56.

The spelling of 147834668621 in words is "one hundred forty-seven billion, eight hundred thirty-four million, six hundred sixty-eight thousand, six hundred twenty-one".