1361777620672 has 28 divisors (see below), whose sum is σ = 3088317105040. Its totient is φ = 583618980096.

The previous prime is 1361777620661. The next prime is 1361777620729. The reversal of 1361777620672 is 2760267771631.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519840647 + ... + 1519841542.

Almost surely, 2^{1361777620672} is an apocalyptic number.

It is an amenable number.

1361777620672 is an abundant number, since it is smaller than the sum of its proper divisors (1726539484368).

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

1361777620672 is an equidigital number, since it uses as much as digits as its factorization.

1361777620672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039682208 (or 3039682198 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 55.

The spelling of 1361777620672 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-seven million, six hundred twenty thousand, six hundred seventy-two".