71842170651 has 16 divisors (see below), whose sum is σ = 100035640320. Its totient is φ = 45775128960.

The previous prime is 71842170637. The next prime is 71842170671. The reversal of 71842170651 is 15607124817.

It is not a de Polignac number, because 71842170651 - 2⁹ = 71842170139 is a prime.

It is a super-2 number, since 2×71842170651² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71842170671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337966 + ... + 507843.

It is an arithmetic number, because the mean of its divisors is an integer number (6252227520).

Almost surely, 2^71842170651 is an apocalyptic number.

71842170651 is a deficient number, since it is larger than the sum of its proper divisors (28193469669).

71842170651 is a wasteful number, since it uses less digits than its factorization.

71842170651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847066.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 71842170651 in words is "seventy-one billion, eight hundred forty-two million, one hundred seventy thousand, six hundred fifty-one".