30545040040 has 64 divisors (see below), whose sum is σ = 70471800000. Its totient is φ = 11911477248.

The previous prime is 30545040023. The next prime is 30545040041. The reversal of 30545040040 is 4004054503.

It is a junction number, because it is equal to n+sod(n) for n = 30545039987 and 30545040014.

It is not an unprimeable number, because it can be changed into a prime (30545040041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201211 + ... + 318709.

It is an arithmetic number, because the mean of its divisors is an integer number (1101121875).

Almost surely, 2^30545040040 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 30545040040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35235900000).

30545040040 is an abundant number, since it is smaller than the sum of its proper divisors (39926759960).

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

30545040040 is a wasteful number, since it uses less digits than its factorization.

30545040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117674 (or 117670 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 30545040040 its reverse (4004054503), we get a palindrome (34549094543).

The spelling of 30545040040 in words is "thirty billion, five hundred forty-five million, forty thousand, forty".