1340669169978 has 32 divisors (see below), whose sum is σ = 2850406597440. Its totient is φ = 419177433600.

The previous prime is 1340669169947. The next prime is 1340669170021. The reversal of 1340669169978 is 8799619660431.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58207575 + ... + 58230602.

It is an arithmetic number, because the mean of its divisors is an integer number (89075206170).

Almost surely, 2^{1340669169978} is an apocalyptic number.

1340669169978 is an abundant number, since it is smaller than the sum of its proper divisors (1509737427462).

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

1340669169978 is a wasteful number, since it uses less digits than its factorization.

1340669169978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116438302.

The product of its (nonzero) digits is 105815808, while the sum is 69.

The spelling of 1340669169978 in words is "one trillion, three hundred forty billion, six hundred sixty-nine million, one hundred sixty-nine thousand, nine hundred seventy-eight".