1321677045698 has 4 divisors (see below), whose sum is σ = 1982515568550. Its totient is φ = 660838522848.

The previous prime is 1321677045691. The next prime is 1321677045721. The reversal of 1321677045698 is 8965407761231.

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., 1005060385729 + 316616659969 = 1002527^2 + 562687^2 .

It is not an unprimeable number, because it can be changed into a prime (1321677045691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330419261423 + ... + 330419261426.

It is a 1-persistent number, because it is pandigital, but 2⋅1321677045698 = 2643354091396 is not.

Almost surely, 2^{1321677045698} is an apocalyptic number.

1321677045698 is a deficient number, since it is larger than the sum of its proper divisors (660838522852).

1321677045698 is an equidigital number, since it uses as much as digits as its factorization.

1321677045698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660838522851.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 1321677045698 in words is "one trillion, three hundred twenty-one billion, six hundred seventy-seven million, forty-five thousand, six hundred ninety-eight".