1320888056680 has 16 divisors (see below), whose sum is σ = 2971998127620. Its totient is φ = 528355222656.

The previous prime is 1320888056669. The next prime is 1320888056699. The reversal of 1320888056680 is 866508880231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1144741645476 + 176146411204 = 1069926^2 + 419698^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16511100669 + ... + 16511100748.

Almost surely, 2^{1320888056680} is an apocalyptic number.

1320888056680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320888056680 is an abundant number, since it is smaller than the sum of its proper divisors (1651110070940).

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

1320888056680 is a wasteful number, since it uses less digits than its factorization.

1320888056680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33022201428 (or 33022201424 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 1320888056680 in words is "one trillion, three hundred twenty billion, eight hundred eighty-eight million, fifty-six thousand, six hundred eighty".