70198724956668 has 216 divisors, whose sum is σ = 209450439475200. Its totient is φ = 18232166272320.

The previous prime is 70198724956663. The next prime is 70198724956687. The reversal of 70198724956668 is 86665942789107.

It is a junction number, because it is equal to n+sod(n) for n = 70198724956593 and 70198724956602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70198724956663) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1457015803 + ... + 1457063981.

Almost surely, 2^{70198724956668} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70198724956668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104725219737600).

70198724956668 is an abundant number, since it is smaller than the sum of its proper divisors (139251714518532).

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

70198724956668 is a wasteful number, since it uses less digits than its factorization.

70198724956668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68701 (or 68681 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 78.

The spelling of 70198724956668 in words is "seventy trillion, one hundred ninety-eight billion, seven hundred twenty-four million, nine hundred fifty-six thousand, six hundred sixty-eight".