70116921616 has 105 divisors (see below), whose sum is σ = 159318729381. Its totient is φ = 29894409216.

The previous prime is 70116921613. The next prime is 70116921649. The reversal of 70116921616 is 61612961107.

The square root of 70116921616 is 264796.

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

It can be written as a sum of positive squares in only one way, i.e., 16988515600 + 53128406016 = 130340^2 + 230496^2 .

It is not an unprimeable number, because it can be changed into a prime (70116921613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 363300016 + ... + 363300208.

Almost surely, 2^70116921616 is an apocalyptic number.

70116921616 is the 264796-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70116921616

70116921616 is an abundant number, since it is smaller than the sum of its proper divisors (89201807765).

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

70116921616 is an frugal number, since it uses more digits than its factorization.

70116921616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 70116921616 in words is "seventy billion, one hundred sixteen million, nine hundred twenty-one thousand, six hundred sixteen".