70551596909 has 2 divisors, whose sum is σ = 70551596910. Its totient is φ = 70551596908.

The previous prime is 70551596891. The next prime is 70551596957. The reversal of 70551596909 is 90969515507.

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., 57721504009 + 12830092900 = 240253^2 + 113270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70551596909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70551593909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35275798454 + 35275798455.

It is an arithmetic number, because the mean of its divisors is an integer number (35275798455).

Almost surely, 2^70551596909 is an apocalyptic number.

It is an amenable number.

70551596909 is a deficient number, since it is larger than the sum of its proper divisors (1).

70551596909 is an equidigital number, since it uses as much as digits as its factorization.

70551596909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3827250, while the sum is 56.

The spelling of 70551596909 in words is "seventy billion, five hundred fifty-one million, five hundred ninety-six thousand, nine hundred nine".