30820781488 has 40 divisors (see below), whose sum is σ = 69264630272. Its totient is φ = 13011755328.

The previous prime is 30820781473. The next prime is 30820781503. The reversal of 30820781488 is 88418702803.

It is an interprime number because it is at equal distance from previous prime (30820781473) and next prime (30820781503).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2046120 + ... + 2061127.

Almost surely, 2^30820781488 is an apocalyptic number.

It is an amenable number.

30820781488 is an abundant number, since it is smaller than the sum of its proper divisors (38443848784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30820781488 is a wasteful number, since it uses less digits than its factorization.

30820781488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107329 (or 4107323 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 49.

The spelling of 30820781488 in words is "thirty billion, eight hundred twenty million, seven hundred eighty-one thousand, four hundred eighty-eight".