1612599999973 has 2 divisors, whose sum is σ = 1612599999974. Its totient is φ = 1612599999972.

The previous prime is 1612599999949. The next prime is 1612600000013. The reversal of 1612599999973 is 3799999952161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1518570683809 + 94029316164 = 1232303^2 + 306642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612599999973 - 2²⁵ = 1612566445541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1612599999893 and 1612599999902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612599993973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806299999986 + 806299999987.

It is an arithmetic number, because the mean of its divisors is an integer number (806299999987).

Almost surely, 2^{1612599999973} is an apocalyptic number.

It is an amenable number.

1612599999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612599999973 is an equidigital number, since it uses as much as digits as its factorization.

1612599999973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 669615660, while the sum is 79.

The spelling of 1612599999973 in words is "one trillion, six hundred twelve billion, five hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-three".