116405247509 has 2 divisors, whose sum is σ = 116405247510. Its totient is φ = 116405247508.

The previous prime is 116405247467. The next prime is 116405247557. The reversal of 116405247509 is 905742504611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59834052100 + 56571195409 = 244610^2 + 237847^2 .

It is a cyclic number.

It is not a de Polignac number, because 116405247509 - 2¹² = 116405243413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116405247509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116405247709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58202623754 + 58202623755.

It is an arithmetic number, because the mean of its divisors is an integer number (58202623755).

Almost surely, 2^116405247509 is an apocalyptic number.

It is an amenable number.

116405247509 is a deficient number, since it is larger than the sum of its proper divisors (1).

116405247509 is an equidigital number, since it uses as much as digits as its factorization.

116405247509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 116405247509 in words is "one hundred sixteen billion, four hundred five million, two hundred forty-seven thousand, five hundred nine".