1554002009993 has 2 divisors, whose sum is σ = 1554002009994. Its totient is φ = 1554002009992.

The previous prime is 1554002009981. The next prime is 1554002010023. The reversal of 1554002009993 is 3999002004551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1007116616704 + 546885393289 = 1003552^2 + 739517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1554002009993 - 2⁸ = 1554002009737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1554002006993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777001004996 + 777001004997.

It is an arithmetic number, because the mean of its divisors is an integer number (777001004997).

Almost surely, 2^{1554002009993} is an apocalyptic number.

It is an amenable number.

1554002009993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1554002009993 is an equidigital number, since it uses as much as digits as its factorization.

1554002009993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437400, while the sum is 47.

The spelling of 1554002009993 in words is "one trillion, five hundred fifty-four billion, two million, nine thousand, nine hundred ninety-three".