30636516851 has 2 divisors, whose sum is σ = 30636516852. Its totient is φ = 30636516850.

The previous prime is 30636516839. The next prime is 30636516877. The reversal of 30636516851 is 15861563603.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30636516851 - 2³⁰ = 29562775027 is a prime.

It is not a weakly prime, because it can be changed into another prime (30636516821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15318258425 + 15318258426.

It is an arithmetic number, because the mean of its divisors is an integer number (15318258426).

Almost surely, 2^30636516851 is an apocalyptic number.

30636516851 is a deficient number, since it is larger than the sum of its proper divisors (1).

30636516851 is an equidigital number, since it uses as much as digits as its factorization.

30636516851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 30636516851 in words is "thirty billion, six hundred thirty-six million, five hundred sixteen thousand, eight hundred fifty-one".