70444347851 has 2 divisors, whose sum is σ = 70444347852. Its totient is φ = 70444347850.

The previous prime is 70444347833. The next prime is 70444347863. The reversal of 70444347851 is 15874344407.

It is a strong prime.

It is an emirp because it is prime and its reverse (15874344407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70444347851 - 2¹⁸ = 70444085707 is a prime.

It is a super-2 number, since 2×70444347851² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70444347796 and 70444347805.

It is not a weakly prime, because it can be changed into another prime (70444347811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35222173925 + 35222173926.

It is an arithmetic number, because the mean of its divisors is an integer number (35222173926).

Almost surely, 2^70444347851 is an apocalyptic number.

70444347851 is a deficient number, since it is larger than the sum of its proper divisors (1).

70444347851 is an equidigital number, since it uses as much as digits as its factorization.

70444347851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1505280, while the sum is 47.

The spelling of 70444347851 in words is "seventy billion, four hundred forty-four million, three hundred forty-seven thousand, eight hundred fifty-one".