30619880640 has 84 divisors (see below), whose sum is σ = 105319641024. Its totient is φ = 8165300736.

The previous prime is 30619880609. The next prime is 30619880647. The reversal of 30619880640 is 4608891603.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (30619880647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5313072 + ... + 5318831.

Almost surely, 2^30619880640 is an apocalyptic number.

30619880640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30619880640 is an abundant number, since it is smaller than the sum of its proper divisors (74699760384).

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

30619880640 is a wasteful number, since it uses less digits than its factorization.

30619880640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10631926 (or 10631913 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 30619880640 in words is "thirty billion, six hundred nineteen million, eight hundred eighty thousand, six hundred forty".