19787141579076 has 81 divisors (see below), whose sum is σ = 50138891016669. Its totient is φ = 6579744556032.

The previous prime is 19787141579069. The next prime is 19787141579081. The reversal of 19787141579076 is 67097514178791.

The square root of 19787141579076 is 4448274.

It is a perfect power (a square), and thus also a powerful number.

19787141579076 is a `hidden beast` number, since 1 + 9 + 7 + 8 + 7 + 1 + 41 + 579 + 0 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15637674802500 + 4149466776576 = 3954450^2 + 2037024^2 .

It is a super-2 number, since 2×19787141579076² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19787141578995 and 19787141579013.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17161440516 + ... + 17161441668.

Almost surely, 2^{19787141579076} is an apocalyptic number.

19787141579076 is the 4448274-th square number.

It is an amenable number.

19787141579076 is an abundant number, since it is smaller than the sum of its proper divisors (30351749437593).

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

19787141579076 is an frugal number, since it uses more digits than its factorization.

19787141579076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 186701760, while the sum is 72.

The spelling of 19787141579076 in words is "nineteen trillion, seven hundred eighty-seven billion, one hundred forty-one million, five hundred seventy-nine thousand, seventy-six".