1305623134650 has 24 divisors (see below), whose sum is σ = 3237945374304. Its totient is φ = 348166169200.

The previous prime is 1305623134643. The next prime is 1305623134667. The reversal of 1305623134650 is 564313265031.

It is a junction number, because it is equal to n+sod(n) for n = 1305623134599 and 1305623134608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4352076966 + ... + 4352077265.

It is an arithmetic number, because the mean of its divisors is an integer number (134914390596).

Almost surely, 2^{1305623134650} is an apocalyptic number.

1305623134650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305623134650 is an abundant number, since it is smaller than the sum of its proper divisors (1932322239654).

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

1305623134650 is a wasteful number, since it uses less digits than its factorization.

1305623134650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704154246 (or 8704154241 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

Adding to 1305623134650 its reverse (564313265031), we get a palindrome (1869936399681).

The spelling of 1305623134650 in words is "one trillion, three hundred five billion, six hundred twenty-three million, one hundred thirty-four thousand, six hundred fifty".