34535402021 has 2 divisors, whose sum is σ = 34535402022. Its totient is φ = 34535402020.

The previous prime is 34535402009. The next prime is 34535402047. The reversal of 34535402021 is 12020453543.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26027368900 + 8508033121 = 161330^2 + 92239^2 .

It is a cyclic number.

It is not a de Polignac number, because 34535402021 - 2¹⁰ = 34535400997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34535402621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17267701010 + 17267701011.

It is an arithmetic number, because the mean of its divisors is an integer number (17267701011).

Almost surely, 2^34535402021 is an apocalyptic number.

It is an amenable number.

34535402021 is a deficient number, since it is larger than the sum of its proper divisors (1).

34535402021 is an equidigital number, since it uses as much as digits as its factorization.

34535402021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 34535402021 its reverse (12020453543), we get a palindrome (46555855564).

The spelling of 34535402021 in words is "thirty-four billion, five hundred thirty-five million, four hundred two thousand, twenty-one".