1351640220335 has 48 divisors (see below), whose sum is σ = 1816972236000. Its totient is φ = 961775880192.

The previous prime is 1351640220331. The next prime is 1351640220341. The reversal of 1351640220335 is 5330220461531.

It is a happy number.

It is not a de Polignac number, because 1351640220335 - 2² = 1351640220331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1351640220295 and 1351640220304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351640220331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12496316 + ... + 12604014.

It is an arithmetic number, because the mean of its divisors is an integer number (37853588250).

Almost surely, 2^{1351640220335} is an apocalyptic number.

1351640220335 is a deficient number, since it is larger than the sum of its proper divisors (465332015665).

1351640220335 is a wasteful number, since it uses less digits than its factorization.

1351640220335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108168 (or 108149 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 1351640220335 its reverse (5330220461531), we get a palindrome (6681860681866).

The spelling of 1351640220335 in words is "one trillion, three hundred fifty-one billion, six hundred forty million, two hundred twenty thousand, three hundred thirty-five".