30689554939 has 4 divisors (see below), whose sum is σ = 30789521224. Its totient is φ = 30589588656.

The previous prime is 30689554937. The next prime is 30689554967. The reversal of 30689554939 is 93945598603.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30689554939 - 2¹ = 30689554937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30689554937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49982682 + ... + 49983295.

It is an arithmetic number, because the mean of its divisors is an integer number (7697380306).

Almost surely, 2^30689554939 is an apocalyptic number.

30689554939 is a deficient number, since it is larger than the sum of its proper divisors (99966285).

30689554939 is an equidigital number, since it uses as much as digits as its factorization.

30689554939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99966284.

The product of its (nonzero) digits is 31492800, while the sum is 61.

The spelling of 30689554939 in words is "thirty billion, six hundred eighty-nine million, five hundred fifty-four thousand, nine hundred thirty-nine".