30156645977 has 2 divisors, whose sum is σ = 30156645978. Its totient is φ = 30156645976.

The previous prime is 30156645971. The next prime is 30156645979. The reversal of 30156645977 is 77954665103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15811553536 + 14345092441 = 125744^2 + 119771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30156645977 is a prime.

It is a super-2 number, since 2×30156645977² (a number of 22 digits) contains 22 as substring.

Together with 30156645979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30156645971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15078322988 + 15078322989.

It is an arithmetic number, because the mean of its divisors is an integer number (15078322989).

Almost surely, 2^30156645977 is an apocalyptic number.

It is an amenable number.

30156645977 is a deficient number, since it is larger than the sum of its proper divisors (1).

30156645977 is an equidigital number, since it uses as much as digits as its factorization.

30156645977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 30156645977 in words is "thirty billion, one hundred fifty-six million, six hundred forty-five thousand, nine hundred seventy-seven".