30782740509 has 24 divisors (see below), whose sum is σ = 45999475704. Its totient is φ = 19823040000.

The previous prime is 30782740507. The next prime is 30782740537. The reversal of 30782740509 is 90504728703.

30782740509 is a `hidden beast` number, since 3 + 0 + 78 + 2 + 74 + 0 + 509 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 782768484 + 29999972025 = 27978^2 + 173205^2 .

It is not a de Polignac number, because 30782740509 - 2¹ = 30782740507 is a prime.

It is a super-2 number, since 2×30782740509² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30782740507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 375712 + ... + 450249.

It is an arithmetic number, because the mean of its divisors is an integer number (1916644821).

Almost surely, 2^30782740509 is an apocalyptic number.

It is an amenable number.

30782740509 is a deficient number, since it is larger than the sum of its proper divisors (15216735195).

30782740509 is a wasteful number, since it uses less digits than its factorization.

30782740509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826109 (or 826106 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 30782740509 in words is "thirty billion, seven hundred eighty-two million, seven hundred forty thousand, five hundred nine".