30856435553 has 2 divisors, whose sum is σ = 30856435554. Its totient is φ = 30856435552.

The previous prime is 30856435523. The next prime is 30856435637. The reversal of 30856435553 is 35553465803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20941852369 + 9914583184 = 144713^2 + 99572^2 .

It is a cyclic number.

It is not a de Polignac number, because 30856435553 - 2⁸ = 30856435297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30856435498 and 30856435507.

It is not a weakly prime, because it can be changed into another prime (30856435523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15428217776 + 15428217777.

It is an arithmetic number, because the mean of its divisors is an integer number (15428217777).

Almost surely, 2^30856435553 is an apocalyptic number.

It is an amenable number.

30856435553 is a deficient number, since it is larger than the sum of its proper divisors (1).

30856435553 is an equidigital number, since it uses as much as digits as its factorization.

30856435553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240000, while the sum is 47.

Adding to 30856435553 its sum of digits (47), we get a square (30856435600 = 175660²).

The spelling of 30856435553 in words is "thirty billion, eight hundred fifty-six million, four hundred thirty-five thousand, five hundred fifty-three".