30361193856 has 192 divisors, whose sum is σ = 101974279680. Its totient is φ = 8489954304.

The previous prime is 30361193833. The next prime is 30361193857. The reversal of 30361193856 is 65839116303.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×30361193856² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30361193857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338955 + ... + 419061.

It is an arithmetic number, because the mean of its divisors is an integer number (531116040).

Almost surely, 2^30361193856 is an apocalyptic number.

30361193856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30361193856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50987139840).

30361193856 is an abundant number, since it is smaller than the sum of its proper divisors (71613085824).

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

30361193856 is a wasteful number, since it uses less digits than its factorization.

30361193856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80181 (or 80166 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 30361193856 in words is "thirty billion, three hundred sixty-one million, one hundred ninety-three thousand, eight hundred fifty-six".