97829756818 has 16 divisors (see below), whose sum is σ = 148333190040. Its totient is φ = 48385875456.

The previous prime is 97829756777. The next prime is 97829756819. The reversal of 97829756818 is 81865792879.

It can be written as a sum of positive squares in 4 ways, for example, as 38918214729 + 58911542089 = 197277^2 + 242717^2 .

It is a super-2 number, since 2×97829756818² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97829756819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254968 + ... + 510556.

Almost surely, 2^97829756818 is an apocalyptic number.

97829756818 is a deficient number, since it is larger than the sum of its proper divisors (50503433222).

97829756818 is a wasteful number, since it uses less digits than its factorization.

97829756818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257661.

The product of its digits is 121927680, while the sum is 70.

The spelling of 97829756818 in words is "ninety-seven billion, eight hundred twenty-nine million, seven hundred fifty-six thousand, eight hundred eighteen".