30640254561 has 64 divisors (see below), whose sum is σ = 52522229760. Its totient is φ = 17291957760.

The previous prime is 30640254527. The next prime is 30640254599. The reversal of 30640254561 is 16545204603.

30640254561 is a `hidden beast` number, since 3 + 0 + 6 + 40 + 2 + 54 + 561 = 666.

It is not a de Polignac number, because 30640254561 - 2¹⁴ = 30640238177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30640254361) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10466680 + ... + 10469606.

It is an arithmetic number, because the mean of its divisors is an integer number (820659840).

Almost surely, 2^30640254561 is an apocalyptic number.

It is an amenable number.

30640254561 is a deficient number, since it is larger than the sum of its proper divisors (21881975199).

30640254561 is a wasteful number, since it uses less digits than its factorization.

30640254561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611 (or 3605 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 30640254561 in words is "thirty billion, six hundred forty million, two hundred fifty-four thousand, five hundred sixty-one".