43640098499 has 2 divisors, whose sum is σ = 43640098500. Its totient is φ = 43640098498.

The previous prime is 43640098487. The next prime is 43640098553. The reversal of 43640098499 is 99489004634.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43640098499 - 2¹⁶ = 43640032963 is a prime.

It is not a weakly prime, because it can be changed into another prime (43640098429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21820049249 + 21820049250.

It is an arithmetic number, because the mean of its divisors is an integer number (21820049250).

Almost surely, 2^43640098499 is an apocalyptic number.

43640098499 is a deficient number, since it is larger than the sum of its proper divisors (1).

43640098499 is an equidigital number, since it uses as much as digits as its factorization.

43640098499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 43640098499 in words is "forty-three billion, six hundred forty million, ninety-eight thousand, four hundred ninety-nine".