30689975777 has 16 divisors (see below), whose sum is σ = 32847600000. Its totient is φ = 28586960640.

The previous prime is 30689975773. The next prime is 30689975801. The reversal of 30689975777 is 77757998603.

It is a cyclic number.

It is not a de Polignac number, because 30689975777 - 2² = 30689975773 is a prime.

It is a super-2 number, since 2×30689975777² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30689975773) 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 in 15 ways as a sum of consecutive naturals, for example, 5791193 + ... + 5796489.

It is an arithmetic number, because the mean of its divisors is an integer number (2052975000).

Almost surely, 2^30689975777 is an apocalyptic number.

It is an amenable number.

30689975777 is a deficient number, since it is larger than the sum of its proper divisors (2157624223).

30689975777 is a wasteful number, since it uses less digits than its factorization.

30689975777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10376.

The product of its (nonzero) digits is 140026320, while the sum is 68.

The spelling of 30689975777 in words is "thirty billion, six hundred eighty-nine million, nine hundred seventy-five thousand, seven hundred seventy-seven".