30906203819772 has 96 divisors (see below), whose sum is σ = 76855448420352. Its totient is φ = 9643924483776.

The previous prime is 30906203819767. The next prime is 30906203819801. The reversal of 30906203819772 is 27791830260903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258433263 + ... + 258552825.

It is an arithmetic number, because the mean of its divisors is an integer number (800577587712).

Almost surely, 2^{30906203819772} 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 30906203819772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38427724210176).

30906203819772 is an abundant number, since it is smaller than the sum of its proper divisors (45949244600580).

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

30906203819772 is a wasteful number, since it uses less digits than its factorization.

30906203819772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139567 (or 139565 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 30906203819772 in words is "thirty trillion, nine hundred six billion, two hundred three million, eight hundred nineteen thousand, seven hundred seventy-two".