30697843752 has 128 divisors (see below), whose sum is σ = 86962377600. Its totient is φ = 10031745024.

The previous prime is 30697843741. The next prime is 30697843793. The reversal of 30697843752 is 25734879603.

30697843752 is a `hidden beast` number, since 30 + 69 + 78 + 437 + 52 = 666.

It is a super-2 number, since 2×30697843752² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 31 ways as a sum of consecutive naturals, for example, 2235018 + ... + 2248710.

It is an arithmetic number, because the mean of its divisors is an integer number (679393575).

Almost surely, 2^30697843752 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 30697843752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43481188800).

30697843752 is an abundant number, since it is smaller than the sum of its proper divisors (56264533848).

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

30697843752 is a wasteful number, since it uses less digits than its factorization.

30697843752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13912 (or 13902 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 30697843752 in words is "thirty billion, six hundred ninety-seven million, eight hundred forty-three thousand, seven hundred fifty-two".