70216823281 has 8 divisors (see below), whose sum is σ = 76943672064. Its totient is φ = 63547224720.

The previous prime is 70216823249. The next prime is 70216823311. The reversal of 70216823281 is 18232861207.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70216823281 - 2⁵ = 70216823249 is a prime.

It is a super-2 number, since 2×70216823281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70216823221) 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, 14309986 + ... + 14314891.

It is an arithmetic number, because the mean of its divisors is an integer number (9617959008).

Almost surely, 2^70216823281 is an apocalyptic number.

It is an amenable number.

70216823281 is a deficient number, since it is larger than the sum of its proper divisors (6726848783).

70216823281 is a wasteful number, since it uses less digits than its factorization.

70216823281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28625111.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 70216823281 in words is "seventy billion, two hundred sixteen million, eight hundred twenty-three thousand, two hundred eighty-one".