30455085665840 has 160 divisors (see below), whose sum is σ = 78558814414080. Its totient is φ = 10886459673600.

The previous prime is 30455085665831. The next prime is 30455085665897. The reversal of 30455085665840 is 4856658055403.

It is a super-2 number, since 2×30455085665840² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30455085665840.

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, 89314391 + ... + 89654729.

It is an arithmetic number, because the mean of its divisors is an integer number (490992590088).

Almost surely, 2^{30455085665840} 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 30455085665840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39279407207040).

30455085665840 is an abundant number, since it is smaller than the sum of its proper divisors (48103728748240).

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

30455085665840 is a wasteful number, since it uses less digits than its factorization.

30455085665840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342091 (or 342085 counting only the distinct ones).

The product of its (nonzero) digits is 69120000, while the sum is 59.

The spelling of 30455085665840 in words is "thirty trillion, four hundred fifty-five billion, eighty-five million, six hundred sixty-five thousand, eight hundred forty".