70261854209 has 2 divisors, whose sum is σ = 70261854210. Its totient is φ = 70261854208.

The previous prime is 70261854193. The next prime is 70261854307. The reversal of 70261854209 is 90245816207.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69605213584 + 656640625 = 263828^2 + 25625^2 .

It is a cyclic number.

It is not a de Polignac number, because 70261854209 - 2⁴ = 70261854193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70261854209.

It is not a weakly prime, because it can be changed into another prime (70261854809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35130927104 + 35130927105.

It is an arithmetic number, because the mean of its divisors is an integer number (35130927105).

Almost surely, 2^70261854209 is an apocalyptic number.

It is an amenable number.

70261854209 is a deficient number, since it is larger than the sum of its proper divisors (1).

70261854209 is an equidigital number, since it uses as much as digits as its factorization.

70261854209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 70261854209 in words is "seventy billion, two hundred sixty-one million, eight hundred fifty-four thousand, two hundred nine".