70685052251 has 16 divisors (see below), whose sum is σ = 78188627328. Its totient is φ = 63361569600.

The previous prime is 70685052223. The next prime is 70685052257. The reversal of 70685052251 is 15225058607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70685052251 is a prime.

It is a super-2 number, since 2×70685052251² (a number of 22 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 = 70685052199 and 70685052208.

It is not an unprimeable number, because it can be changed into a prime (70685052257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3609356 + ... + 3628886.

It is an arithmetic number, because the mean of its divisors is an integer number (4886789208).

Almost surely, 2^70685052251 is an apocalyptic number.

70685052251 is a deficient number, since it is larger than the sum of its proper divisors (7503575077).

70685052251 is a wasteful number, since it uses less digits than its factorization.

70685052251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24122.

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 70685052251 in words is "seventy billion, six hundred eighty-five million, fifty-two thousand, two hundred fifty-one".