42536999993 has 2 divisors, whose sum is σ = 42536999994. Its totient is φ = 42536999992.

The previous prime is 42536999983. The next prime is 42537000001. The reversal of 42536999993 is 39999963524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34571080489 + 7965919504 = 185933^2 + 89252^2 .

It is a cyclic number.

It is not a de Polignac number, because 42536999993 - 2⁴ = 42536999977 is a prime.

It is not a weakly prime, because it can be changed into another prime (42536999983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21268499996 + 21268499997.

It is an arithmetic number, because the mean of its divisors is an integer number (21268499997).

Almost surely, 2^42536999993 is an apocalyptic number.

It is an amenable number.

42536999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

42536999993 is an equidigital number, since it uses as much as digits as its factorization.

42536999993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127545840, while the sum is 68.

The spelling of 42536999993 in words is "forty-two billion, five hundred thirty-six million, nine hundred ninety-nine thousand, nine hundred ninety-three".