1340145990538 has 8 divisors (see below), whose sum is σ = 2116019985120. Its totient is φ = 634805995500.

The previous prime is 1340145990529. The next prime is 1340145990539. The reversal of 1340145990538 is 8350995410431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1340145990539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17633499838 + ... + 17633499913.

It is an arithmetic number, because the mean of its divisors is an integer number (264502498140).

Almost surely, 2^{1340145990538} is an apocalyptic number.

1340145990538 is a deficient number, since it is larger than the sum of its proper divisors (775873994582).

1340145990538 is a wasteful number, since it uses less digits than its factorization.

1340145990538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35266999772.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 1340145990538 in words is "one trillion, three hundred forty billion, one hundred forty-five million, nine hundred ninety thousand, five hundred thirty-eight".