499999975555545 has 48 divisors (see below), whose sum is σ = 870799146751872. Its totient is φ = 265395181121280.

The previous prime is 499999975555463. The next prime is 499999975555559. The reversal of 499999975555545 is 545555579999994.

499999975555545 is a `hidden beast` number, since 49 + 9 + 9 + 9 + 9 + 9 + 7 + 5 + 5 + 5 + 5 + 545 = 666.

It is not a de Polignac number, because 499999975555545 - 2⁷ = 499999975555417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336587749 + ... + 338069981.

It is an arithmetic number, because the mean of its divisors is an integer number (18141648890664).

Almost surely, 2^{499999975555545} is an apocalyptic number.

499999975555545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

499999975555545 is a deficient number, since it is larger than the sum of its proper divisors (370799171196327).

499999975555545 is a wasteful number, since it uses less digits than its factorization.

499999975555545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517982 (or 1517979 counting only the distinct ones).

The product of its digits is 930021750000, while the sum is 99.

The spelling of 499999975555545 in words is "four hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred seventy-five million, five hundred fifty-five thousand, five hundred forty-five".