155830499999 has 2 divisors, whose sum is σ = 155830500000. Its totient is φ = 155830499998.

The previous prime is 155830499963. The next prime is 155830500043. The reversal of 155830499999 is 999994038551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155830499999 - 2³² = 151535532703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155830499939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77915249999 + 77915250000.

It is an arithmetic number, because the mean of its divisors is an integer number (77915250000).

Almost surely, 2^155830499999 is an apocalyptic number.

155830499999 is a deficient number, since it is larger than the sum of its proper divisors (1).

155830499999 is an equidigital number, since it uses as much as digits as its factorization.

155830499999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141717600, while the sum is 71.

The spelling of 155830499999 in words is "one hundred fifty-five billion, eight hundred thirty million, four hundred ninety-nine thousand, nine hundred ninety-nine".