30435402661 has 4 divisors (see below), whose sum is σ = 30437200332. Its totient is φ = 30433604992.

The previous prime is 30435402649. The next prime is 30435402677. The reversal of 30435402661 is 16620453403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16620453403 = 71 ⋅234090893.

It can be written as a sum of positive squares in 2 ways, for example, as 7545528225 + 22889874436 = 86865^2 + 151294^2 .

It is a cyclic number.

It is not a de Polignac number, because 30435402661 - 2⁵ = 30435402629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30435402631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873196 + ... + 907381.

It is an arithmetic number, because the mean of its divisors is an integer number (7609300083).

Almost surely, 2^30435402661 is an apocalyptic number.

It is an amenable number.

30435402661 is a deficient number, since it is larger than the sum of its proper divisors (1797671).

30435402661 is a wasteful number, since it uses less digits than its factorization.

30435402661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797670.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 30435402661 in words is "thirty billion, four hundred thirty-five million, four hundred two thousand, six hundred sixty-one".