42655641499 has 2 divisors, whose sum is σ = 42655641500. Its totient is φ = 42655641498.

The previous prime is 42655641473. The next prime is 42655641521. The reversal of 42655641499 is 99414655624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42655641499 - 2¹⁵ = 42655608731 is a prime.

It is not a weakly prime, because it can be changed into another prime (42655641449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21327820749 + 21327820750.

It is an arithmetic number, because the mean of its divisors is an integer number (21327820750).

Almost surely, 2^42655641499 is an apocalyptic number.

42655641499 is a deficient number, since it is larger than the sum of its proper divisors (1).

42655641499 is an equidigital number, since it uses as much as digits as its factorization.

42655641499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 55.

The spelling of 42655641499 in words is "forty-two billion, six hundred fifty-five million, six hundred forty-one thousand, four hundred ninety-nine".