30781482470144 has 144 divisors (see below), whose sum is σ = 72492065243136. Its totient is φ = 12765344256000.

The previous prime is 30781482470107. The next prime is 30781482470159. The reversal of 30781482470144 is 44107428418703.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 883314929 + ... + 883349775.

It is an arithmetic number, because the mean of its divisors is an integer number (503417119744).

Almost surely, 2^{30781482470144} 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 30781482470144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36246032621568).

30781482470144 is an abundant number, since it is smaller than the sum of its proper divisors (41710582772992).

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

30781482470144 is a wasteful number, since it uses less digits than its factorization.

30781482470144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50802 (or 50788 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 53.

The spelling of 30781482470144 in words is "thirty trillion, seven hundred eighty-one billion, four hundred eighty-two million, four hundred seventy thousand, one hundred forty-four".