30512552550157 has 2 divisors, whose sum is σ = 30512552550158. Its totient is φ = 30512552550156.

The previous prime is 30512552550121. The next prime is 30512552550197. The reversal of 30512552550157 is 75105525521503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29643386041476 + 869166508681 = 5444574^2 + 932291^2 .

It is an emirp because it is prime and its reverse (75105525521503) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30512552550157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30512552550197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15256276275078 + 15256276275079.

It is an arithmetic number, because the mean of its divisors is an integer number (15256276275079).

Almost surely, 2^{30512552550157} is an apocalyptic number.

It is an amenable number.

30512552550157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30512552550157 is an equidigital number, since it uses as much as digits as its factorization.

30512552550157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312500, while the sum is 46.

The spelling of 30512552550157 in words is "thirty trillion, five hundred twelve billion, five hundred fifty-two million, five hundred fifty thousand, one hundred fifty-seven".