1543215422993 has 2 divisors, whose sum is σ = 1543215422994. Its totient is φ = 1543215422992.

The previous prime is 1543215422953. The next prime is 1543215423017. The reversal of 1543215422993 is 3992245123451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1189371279889 + 353844143104 = 1090583^2 + 594848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1543215422993 - 2¹⁶ = 1543215357457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1543215422953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771607711496 + 771607711497.

It is an arithmetic number, because the mean of its divisors is an integer number (771607711497).

Almost surely, 2^{1543215422993} is an apocalyptic number.

It is an amenable number.

1543215422993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1543215422993 is an equidigital number, since it uses as much as digits as its factorization.

1543215422993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 50.

The spelling of 1543215422993 in words is "one trillion, five hundred forty-three billion, two hundred fifteen million, four hundred twenty-two thousand, nine hundred ninety-three".