406239061537 has 2 divisors, whose sum is σ = 406239061538. Its totient is φ = 406239061536.

The previous prime is 406239061517. The next prime is 406239061573. The reversal of 406239061537 is 735160932604.

Together with next prime (406239061573) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342407544336 + 63831517201 = 585156^2 + 252649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406239061537 is a prime.

It is not a weakly prime, because it can be changed into another prime (406239061507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203119530768 + 203119530769.

It is an arithmetic number, because the mean of its divisors is an integer number (203119530769).

Almost surely, 2^406239061537 is an apocalyptic number.

It is an amenable number.

406239061537 is a deficient number, since it is larger than the sum of its proper divisors (1).

406239061537 is an equidigital number, since it uses as much as digits as its factorization.

406239061537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 406239061537 in words is "four hundred six billion, two hundred thirty-nine million, sixty-one thousand, five hundred thirty-seven".