19439263364004 has 135 divisors (see below), whose sum is σ = 54060517903665. Its totient is φ = 5889715888320.

The previous prime is 19439263363903. The next prime is 19439263364021. The reversal of 19439263364004 is 40046336293491.

The square root of 19439263364004 is 4408998.

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

19439263364004 is a `hidden beast` number, since 1 + 94 + 3 + 92 + 63 + 3 + 6 + 400 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17639244008100 + 1800019355904 = 4199910^2 + 1341648^2 .

It is a super-2 number, since 2×19439263364004² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3200929512 + ... + 3200935584.

Almost surely, 2^{19439263364004} is an apocalyptic number.

19439263364004 is the 4408998-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19439263364004

19439263364004 is an abundant number, since it is smaller than the sum of its proper divisors (34621254539661).

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

19439263364004 is an frugal number, since it uses more digits than its factorization.

19439263364004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12200 (or 6089 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 54.

The spelling of 19439263364004 in words is "nineteen trillion, four hundred thirty-nine billion, two hundred sixty-three million, three hundred sixty-four thousand, four".