70920236837 has 2 divisors, whose sum is σ = 70920236838. Its totient is φ = 70920236836.

The previous prime is 70920236617. The next prime is 70920236839. The reversal of 70920236837 is 73863202907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44120582401 + 26799654436 = 210049^2 + 163706^2 .

It is a cyclic number.

It is not a de Polignac number, because 70920236837 - 2²⁴ = 70903459621 is a prime.

Together with 70920236839, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70920236791 and 70920236800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70920236839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35460118418 + 35460118419.

It is an arithmetic number, because the mean of its divisors is an integer number (35460118419).

Almost surely, 2^70920236837 is an apocalyptic number.

It is an amenable number.

70920236837 is a deficient number, since it is larger than the sum of its proper divisors (1).

70920236837 is an equidigital number, since it uses as much as digits as its factorization.

70920236837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 70920236837 in words is "seventy billion, nine hundred twenty million, two hundred thirty-six thousand, eight hundred thirty-seven".