30538788077 has 6 divisors (see below), whose sum is σ = 35524712718. Its totient is φ = 26176104024.

The previous prime is 30538788073. The next prime is 30538788079. The reversal of 30538788077 is 77088783503.

It can be written as a sum of positive squares in only one way, i.e., 30531970756 + 6817321 = 174734^2 + 2611^2 .

It is not a de Polignac number, because 30538788077 - 2² = 30538788073 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 (30538788073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311620238 + ... + 311620335.

It is an arithmetic number, because the mean of its divisors is an integer number (5920785453).

Almost surely, 2^30538788077 is an apocalyptic number.

It is an amenable number.

30538788077 is a deficient number, since it is larger than the sum of its proper divisors (4985924641).

30538788077 is an equidigital number, since it uses as much as digits as its factorization.

30538788077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623240587 (or 623240580 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 30538788077 in words is "thirty billion, five hundred thirty-eight million, seven hundred eighty-eight thousand, seventy-seven".