19620188307144 has 48 divisors (see below), whose sum is σ = 55448358264000. Its totient is φ = 6255712213344.

The previous prime is 19620188307047. The next prime is 19620188307149. The reversal of 19620188307144 is 44170388102691.

19620188307144 is a `hidden beast` number, since 1 + 9 + 620 + 1 + 8 + 8 + 3 + 0 + 7 + 1 + 4 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (19620188307149) 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 in 11 ways as a sum of consecutive naturals, for example, 5923968244 + ... + 5923971555.

It is an arithmetic number, because the mean of its divisors is an integer number (1155174130500).

Almost surely, 2^{19620188307144} is an apocalyptic number.

It is an amenable number.

19620188307144 is an abundant number, since it is smaller than the sum of its proper divisors (35828169956856).

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

19620188307144 is a wasteful number, since it uses less digits than its factorization.

19620188307144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11847939834 (or 11847939827 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 19620188307144 in words is "nineteen trillion, six hundred twenty billion, one hundred eighty-eight million, three hundred seven thousand, one hundred forty-four".