30785223172540 has 24 divisors (see below), whose sum is σ = 64704177053712. Its totient is φ = 12303573384960.

The previous prime is 30785223172421. The next prime is 30785223172549. The reversal of 30785223172540 is 4527132258703.

It is a super-2 number, since 2×30785223172540² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30785223172549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657218749 + ... + 657265588.

It is an arithmetic number, because the mean of its divisors is an integer number (2696007377238).

Almost surely, 2^{30785223172540} is an apocalyptic number.

It is an amenable number.

30785223172540 is an abundant number, since it is smaller than the sum of its proper divisors (33918953881172).

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

30785223172540 is a wasteful number, since it uses less digits than its factorization.

30785223172540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314485517 (or 1314485515 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 30785223172540 in words is "thirty trillion, seven hundred eighty-five billion, two hundred twenty-three million, one hundred seventy-two thousand, five hundred forty".