30515305552240 has 80 divisors (see below), whose sum is σ = 71445262764096. Its totient is φ = 12120648192000.

The previous prime is 30515305552229. The next prime is 30515305552261. The reversal of 30515305552240 is 4225550351503.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a junction number, because it is equal to n+sod(n) for n = 30515305552193 and 30515305552202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31179784 + ... + 32143576.

Almost surely, 2^{30515305552240} 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 30515305552240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35722631382048).

30515305552240 is an abundant number, since it is smaller than the sum of its proper divisors (40929957211856).

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

30515305552240 is a wasteful number, since it uses less digits than its factorization.

30515305552240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966578 (or 966572 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 30515305552240 in words is "thirty trillion, five hundred fifteen billion, three hundred five million, five hundred fifty-two thousand, two hundred forty".