30522562640 has 80 divisors (see below), whose sum is σ = 73469047680. Its totient is φ = 11778869760.

The previous prime is 30522562541. The next prime is 30522562661. The reversal of 30522562640 is 4626522503.

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

It is a super-2 number, since 2×30522562640² (a number of 22 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 30522562640.

It is a congruent number.

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, 3501167 + ... + 3509873.

It is an arithmetic number, because the mean of its divisors is an integer number (918363096).

Almost surely, 2^30522562640 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 30522562640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36734523840).

30522562640 is an abundant number, since it is smaller than the sum of its proper divisors (42946485040).

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

30522562640 is a wasteful number, since it uses less digits than its factorization.

30522562640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260 (or 10254 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 30522562640 in words is "thirty billion, five hundred twenty-two million, five hundred sixty-two thousand, six hundred forty".