30699020440 has 64 divisors (see below), whose sum is σ = 75430323360. Its totient is φ = 11151697920.

The previous prime is 30699020413. The next prime is 30699020441. The reversal of 30699020440 is 4402099603.

It is a self number, because there is not a number n which added to its sum of digits gives 30699020440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30699020441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394174 + ... + 465586.

Almost surely, 2^30699020440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30699020440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37715161680).

30699020440 is an abundant number, since it is smaller than the sum of its proper divisors (44731302920).

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

30699020440 is a wasteful number, since it uses less digits than its factorization.

30699020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72412 (or 72408 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 30699020440 in words is "thirty billion, six hundred ninety-nine million, twenty thousand, four hundred forty".