70700700643 has 2 divisors, whose sum is σ = 70700700644. Its totient is φ = 70700700642.

The previous prime is 70700700641. The next prime is 70700700649. The reversal of 70700700643 is 34600700707.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (34600700707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70700700643 - 2¹ = 70700700641 is a prime.

It is a super-2 number, since 2×70700700643² (a number of 22 digits) contains 22 as substring.

Together with 70700700641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 70700700599 and 70700700608.

It is not a weakly prime, because it can be changed into another prime (70700700641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35350350321 + 35350350322.

It is an arithmetic number, because the mean of its divisors is an integer number (35350350322).

Almost surely, 2^70700700643 is an apocalyptic number.

70700700643 is a deficient number, since it is larger than the sum of its proper divisors (1).

70700700643 is an equidigital number, since it uses as much as digits as its factorization.

70700700643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 34.

The spelling of 70700700643 in words is "seventy billion, seven hundred million, seven hundred thousand, six hundred forty-three".