1305640540030 has 16 divisors (see below), whose sum is σ = 2350171412784. Its totient is φ = 522252118080.

The previous prime is 1305640539961. The next prime is 1305640540033. The reversal of 1305640540030 is 300450465031.

It is a junction number, because it is equal to n+sod(n) for n = 1305640539974 and 1305640540001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305640540033) 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, 1053949 + ... + 1929271.

It is an arithmetic number, because the mean of its divisors is an integer number (146885713299).

Almost surely, 2^{1305640540030} is an apocalyptic number.

1305640540030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305640540030 is a deficient number, since it is larger than the sum of its proper divisors (1044530872754).

1305640540030 is a wasteful number, since it uses less digits than its factorization.

1305640540030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024491.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 1305640540030 in words is "one trillion, three hundred five billion, six hundred forty million, five hundred forty thousand, thirty".