70507205261 has 2 divisors, whose sum is σ = 70507205262. Its totient is φ = 70507205260.

The previous prime is 70507205233. The next prime is 70507205267. The reversal of 70507205261 is 16250270507.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49733460100 + 20773745161 = 223010^2 + 144131^2 .

It is a cyclic number.

It is not a de Polignac number, because 70507205261 - 2¹⁴ = 70507188877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70507205267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35253602630 + 35253602631.

It is an arithmetic number, because the mean of its divisors is an integer number (35253602631).

Almost surely, 2^70507205261 is an apocalyptic number.

It is an amenable number.

70507205261 is a deficient number, since it is larger than the sum of its proper divisors (1).

70507205261 is an equidigital number, since it uses as much as digits as its factorization.

70507205261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 35.

Adding to 70507205261 its reverse (16250270507), we get a palindrome (86757475768).

The spelling of 70507205261 in words is "seventy billion, five hundred seven million, two hundred five thousand, two hundred sixty-one".