623710736107409 has 2 divisors, whose sum is σ = 623710736107410. Its totient is φ = 623710736107408.

The previous prime is 623710736107391. The next prime is 623710736107427. The reversal of 623710736107409 is 904701637017326.

It is a balanced prime because it is at equal distance from previous prime (623710736107391) and next prime (623710736107427).

It can be written as a sum of positive squares in only one way, i.e., 513458741098384 + 110251995009025 = 22659628^2 + 10500095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623710736107409 is a prime.

It is a super-3 number, since 3×623710736107409³ (a number of 45 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (623710736107429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311855368053704 + 311855368053705.

It is an arithmetic number, because the mean of its divisors is an integer number (311855368053705).

Almost surely, 2^{623710736107409} is an apocalyptic number.

It is an amenable number.

623710736107409 is a deficient number, since it is larger than the sum of its proper divisors (1).

623710736107409 is an equidigital number, since it uses as much as digits as its factorization.

623710736107409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 56.

The spelling of 623710736107409 in words is "six hundred twenty-three trillion, seven hundred ten billion, seven hundred thirty-six million, one hundred seven thousand, four hundred nine".