245423519999 has 16 divisors (see below), whose sum is σ = 299758641408. Its totient is φ = 196138349952.

The previous prime is 245423519969. The next prime is 245423520007. The reversal of 245423519999 is 999915324542.

It is a cyclic number.

It is not a de Polignac number, because 245423519999 - 2¹² = 245423515903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245423519969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9624569 + ... + 9650034.

It is an arithmetic number, because the mean of its divisors is an integer number (18734915088).

Almost surely, 2^245423519999 is an apocalyptic number.

245423519999 is a deficient number, since it is larger than the sum of its proper divisors (54335121409).

245423519999 is a wasteful number, since it uses less digits than its factorization.

245423519999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19274734.

The product of its digits is 31492800, while the sum is 62.

The spelling of 245423519999 in words is "two hundred forty-five billion, four hundred twenty-three million, five hundred nineteen thousand, nine hundred ninety-nine".