19720360803055 has 12 divisors (see below), whose sum is σ = 26011318878216. Its totient is φ = 14342080583600.

The previous prime is 19720360803001. The next prime is 19720360803067. The reversal of 19720360803055 is 55030806302791.

It is not a de Polignac number, because 19720360803055 - 2²¹ = 19720358705903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16297818241 + ... + 16297819450.

It is an arithmetic number, because the mean of its divisors is an integer number (2167609906518).

Almost surely, 2^{19720360803055} is an apocalyptic number.

19720360803055 is a deficient number, since it is larger than the sum of its proper divisors (6290958075161).

19720360803055 is a wasteful number, since it uses less digits than its factorization.

19720360803055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32595637718 (or 32595637707 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 19720360803055 in words is "nineteen trillion, seven hundred twenty billion, three hundred sixty million, eight hundred three thousand, fifty-five".