84197434439056 has 75 divisors (see below), whose sum is σ = 166197354517051. Its totient is φ = 41322379670432.

The previous prime is 84197434438991. The next prime is 84197434439143. The reversal of 84197434439056 is 65093443479148.

The square root of 84197434439056 is 9175916.

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

It is a super-2 number, since 2×84197434439056² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84197434438982 and 84197434439000.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 127765454055 + ... + 127765454713.

Almost surely, 2^{84197434439056} is an apocalyptic number.

84197434439056 is the 9175916-th square number.

It is an amenable number.

84197434439056 is a deficient number, since it is larger than the sum of its proper divisors (81999920077995).

84197434439056 is an frugal number, since it uses more digits than its factorization.

84197434439056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 67.

The spelling of 84197434439056 in words is "eighty-four trillion, one hundred ninety-seven billion, four hundred thirty-four million, four hundred thirty-nine thousand, fifty-six".