30755143872 has 168 divisors, whose sum is σ = 90440036544. Its totient is φ = 9987134976.

The previous prime is 30755143871. The next prime is 30755143873. The reversal of 30755143872 is 27834155703.

30755143872 is a `hidden beast` number, since 30 + 7 + 5 + 514 + 38 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (30755143871) and next prime (30755143873).

It is not an unprimeable number, because it can be changed into a prime (30755143871) 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, 10970823 + ... + 10973625.

Almost surely, 2^30755143872 is an apocalyptic number.

30755143872 is a gapful number since it is divisible by the number (32) 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 30755143872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45220018272).

30755143872 is an abundant number, since it is smaller than the sum of its proper divisors (59684892672).

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

30755143872 is a wasteful number, since it uses less digits than its factorization.

30755143872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307 (or 3294 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 30755143872 in words is "thirty billion, seven hundred fifty-five million, one hundred forty-three thousand, eight hundred seventy-two".