70440949819 has 2 divisors, whose sum is σ = 70440949820. Its totient is φ = 70440949818.

The previous prime is 70440949783. The next prime is 70440949867. The reversal of 70440949819 is 91894904407.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70440949819 - 2⁹ = 70440949307 is a prime.

It is a super-2 number, since 2×70440949819² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70440949819.

It is not a weakly prime, because it can be changed into another prime (70440049819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35220474909 + 35220474910.

It is an arithmetic number, because the mean of its divisors is an integer number (35220474910).

Almost surely, 2^70440949819 is an apocalyptic number.

70440949819 is a deficient number, since it is larger than the sum of its proper divisors (1).

70440949819 is an equidigital number, since it uses as much as digits as its factorization.

70440949819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 70440949819 in words is "seventy billion, four hundred forty million, nine hundred forty-nine thousand, eight hundred nineteen".