42361987573 has 2 divisors, whose sum is σ = 42361987574. Its totient is φ = 42361987572.

The previous prime is 42361987559. The next prime is 42361987607. The reversal of 42361987573 is 37578916324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32674900644 + 9687086929 = 180762^2 + 98423^2 .

It is a cyclic number.

It is not a de Polignac number, because 42361987573 - 2¹⁷ = 42361856501 is a prime.

It is a super-2 number, since 2×42361987573² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42362987573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21180993786 + 21180993787.

It is an arithmetic number, because the mean of its divisors is an integer number (21180993787).

Almost surely, 2^42361987573 is an apocalyptic number.

It is an amenable number.

42361987573 is a deficient number, since it is larger than the sum of its proper divisors (1).

42361987573 is an equidigital number, since it uses as much as digits as its factorization.

42361987573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The spelling of 42361987573 in words is "forty-two billion, three hundred sixty-one million, nine hundred eighty-seven thousand, five hundred seventy-three".