42171010064 has 10 divisors (see below), whose sum is σ = 81706332030. Its totient is φ = 21085505024.

The previous prime is 42171010003. The next prime is 42171010081. The reversal of 42171010064 is 46001017124.

It can be written as a sum of positive squares in only one way, i.e., 24907152400 + 17263857664 = 157820^2 + 131392^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317844049 + ... + 1317844080.

It is an arithmetic number, because the mean of its divisors is an integer number (8170633203).

Almost surely, 2^42171010064 is an apocalyptic number.

It is an amenable number.

42171010064 is a deficient number, since it is larger than the sum of its proper divisors (39535321966).

42171010064 is a wasteful number, since it uses less digits than its factorization.

42171010064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635688137 (or 2635688131 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 42171010064 its reverse (46001017124), we get a palindrome (88172027188).

The spelling of 42171010064 in words is "forty-two billion, one hundred seventy-one million, ten thousand, sixty-four".