30855707500000 has 192 divisors, whose sum is σ = 79235389344384. Its totient is φ = 11805640000000.

The previous prime is 30855707499949. The next prime is 30855707500001. The reversal of 30855707500000 is 570755803.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30855707500001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57231690 + ... + 57768310.

It is an arithmetic number, because the mean of its divisors is an integer number (412684319502).

Almost surely, 2^{30855707500000} 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 30855707500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39617694672192).

30855707500000 is an abundant number, since it is smaller than the sum of its proper divisors (48379681844384).

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

30855707500000 is an frugal number, since it uses more digits than its factorization.

30855707500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536689 (or 536651 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 30855707500000 in words is "thirty trillion, eight hundred fifty-five billion, seven hundred seven million, five hundred thousand".