8470043991556 has 81 divisors (see below), whose sum is σ = 17621242772679. Its totient is φ = 3551981157648.

The previous prime is 8470043991463. The next prime is 8470043991581. The reversal of 8470043991556 is 6551993400748.

The square root of 8470043991556 is 2910334.

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

It is a super-2 number, since 2×8470043991556² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8470043991494 and 8470043991503.

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, 1914997561 + ... + 1915001983.

Almost surely, 2^{8470043991556} is an apocalyptic number.

8470043991556 is the 2910334-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8470043991556

8470043991556 is an abundant number, since it is smaller than the sum of its proper divisors (9151198781123).

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

8470043991556 is an frugal number, since it uses more digits than its factorization.

8470043991556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8958 (or 4479 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 8470043991556 in words is "eight trillion, four hundred seventy billion, forty-three million, nine hundred ninety-one thousand, five hundred fifty-six".