555555499973 has 2 divisors, whose sum is σ = 555555499974. Its totient is φ = 555555499972.

The previous prime is 555555499963. The next prime is 555555500023. The reversal of 555555499973 is 379994555555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555491467969 + 64032004 = 745313^2 + 8002^2 .

It is a cyclic number.

It is not a de Polignac number, because 555555499973 - 2²⁸ = 555287064517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 555555499897 and 555555499906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555555499903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277777749986 + 277777749987.

It is an arithmetic number, because the mean of its divisors is an integer number (277777749987).

Almost surely, 2^555555499973 is an apocalyptic number.

It is an amenable number.

555555499973 is a deficient number, since it is larger than the sum of its proper divisors (1).

555555499973 is an equidigital number, since it uses as much as digits as its factorization.

555555499973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 956812500, while the sum is 71.

The spelling of 555555499973 in words is "five hundred fifty-five billion, five hundred fifty-five million, four hundred ninety-nine thousand, nine hundred seventy-three".