1346800134578 has 4 divisors (see below), whose sum is σ = 2020200201870. Its totient is φ = 673400067288.

The previous prime is 1346800134451. The next prime is 1346800134583. The reversal of 1346800134578 is 8754310086431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1330407685489 + 16392449089 = 1153433^2 + 128033^2 .

It is a super-2 number, since 2×1346800134578² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336700033643 + ... + 336700033646.

Almost surely, 2^{1346800134578} is an apocalyptic number.

1346800134578 is a deficient number, since it is larger than the sum of its proper divisors (673400067292).

1346800134578 is an equidigital number, since it uses as much as digits as its factorization.

1346800134578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673400067291.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 1346800134578 in words is "one trillion, three hundred forty-six billion, eight hundred million, one hundred thirty-four thousand, five hundred seventy-eight".