34804015621 has 2 divisors, whose sum is σ = 34804015622. Its totient is φ = 34804015620.

The previous prime is 34804015523. The next prime is 34804015657. The reversal of 34804015621 is 12651040843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33962435521 + 841580100 = 184289^2 + 29010^2 .

It is a cyclic number.

It is not a de Polignac number, because 34804015621 - 2²¹ = 34801918469 is a prime.

It is a super-2 number, since 2×34804015621² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34804015121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17402007810 + 17402007811.

It is an arithmetic number, because the mean of its divisors is an integer number (17402007811).

Almost surely, 2^34804015621 is an apocalyptic number.

It is an amenable number.

34804015621 is a deficient number, since it is larger than the sum of its proper divisors (1).

34804015621 is an equidigital number, since it uses as much as digits as its factorization.

34804015621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 34804015621 in words is "thirty-four billion, eight hundred four million, fifteen thousand, six hundred twenty-one".