42555011615 has 4 divisors (see below), whose sum is σ = 51066013944. Its totient is φ = 34044009288.

The previous prime is 42555011593. The next prime is 42555011617. The reversal of 42555011615 is 51611055524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42555011615 - 2¹⁰ = 42555010591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555011617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255501157 + ... + 4255501166.

It is an arithmetic number, because the mean of its divisors is an integer number (12766503486).

Almost surely, 2^42555011615 is an apocalyptic number.

42555011615 is a deficient number, since it is larger than the sum of its proper divisors (8511002329).

42555011615 is an equidigital number, since it uses as much as digits as its factorization.

42555011615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8511002328.

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 42555011615 in words is "forty-two billion, five hundred fifty-five million, eleven thousand, six hundred fifteen".