1640354630675 has 6 divisors (see below), whose sum is σ = 2034039742068. Its totient is φ = 1312283704520.

The previous prime is 1640354630641. The next prime is 1640354630683. The reversal of 1640354630675 is 5760364530461.

It is not a de Polignac number, because 1640354630675 - 2³² = 1636059663379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32807092589 + ... + 32807092638.

It is an arithmetic number, because the mean of its divisors is an integer number (339006623678).

Almost surely, 2^{1640354630675} is an apocalyptic number.

1640354630675 is a deficient number, since it is larger than the sum of its proper divisors (393685111393).

1640354630675 is an equidigital number, since it uses as much as digits as its factorization.

1640354630675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65614185237 (or 65614185232 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 1640354630675 in words is "one trillion, six hundred forty billion, three hundred fifty-four million, six hundred thirty thousand, six hundred seventy-five".