1320644551198 has 16 divisors (see below), whose sum is σ = 2275815297024. Its totient is φ = 563027219640.

The previous prime is 1320644551189. The next prime is 1320644551201. The reversal of 1320644551198 is 8911554460231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246939090 + ... + 246944437.

It is an arithmetic number, because the mean of its divisors is an integer number (142238456064).

Almost surely, 2^{1320644551198} is an apocalyptic number.

1320644551198 is a deficient number, since it is larger than the sum of its proper divisors (955170745826).

1320644551198 is a wasteful number, since it uses less digits than its factorization.

1320644551198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493883727.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 1320644551198 in words is "one trillion, three hundred twenty billion, six hundred forty-four million, five hundred fifty-one thousand, one hundred ninety-eight".