42291855361 has 12 divisors (see below), whose sum is σ = 49201257492. Its totient is φ = 36246765408.

The previous prime is 42291855293. The next prime is 42291855367. The reversal of 42291855361 is 16355819224.

It can be written as a sum of positive squares in 2 ways, for example, as 4919619600 + 37372235761 = 70140^2 + 193319^2 .

It is not a de Polignac number, because 42291855361 - 2⁷ = 42291855233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42291855367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585891 + ... + 654103.

It is an arithmetic number, because the mean of its divisors is an integer number (4100104791).

Almost surely, 2^42291855361 is an apocalyptic number.

It is an amenable number.

42291855361 is a deficient number, since it is larger than the sum of its proper divisors (6909402131).

42291855361 is a wasteful number, since it uses less digits than its factorization.

42291855361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80880 (or 80873 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 42291855361 in words is "forty-two billion, two hundred ninety-one million, eight hundred fifty-five thousand, three hundred sixty-one".