71942339462669 has 8 divisors (see below), whose sum is σ = 77483046462360. Its totient is φ = 66402586875456.

The previous prime is 71942339462657. The next prime is 71942339462681. The reversal of 71942339462669 is 96626493324917.

It is an interprime number because it is at equal distance from previous prime (71942339462657) and next prime (71942339462681).

It can be written as a sum of positive squares in 4 ways, for example, as 22414666454569 + 49527673008100 = 4734413^2 + 7037590^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71942339462669 - 2¹² = 71942339458573 is a prime.

It is a super-2 number, since 2×71942339462669² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71942339468669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238446554 + ... + 238748075.

It is an arithmetic number, because the mean of its divisors is an integer number (9685380807795).

Almost surely, 2^{71942339462669} is an apocalyptic number.

It is an amenable number.

71942339462669 is a deficient number, since it is larger than the sum of its proper divisors (5540706999691).

71942339462669 is a wasteful number, since it uses less digits than its factorization.

71942339462669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477206239.

The product of its digits is 634894848, while the sum is 71.

The spelling of 71942339462669 in words is "seventy-one trillion, nine hundred forty-two billion, three hundred thirty-nine million, four hundred sixty-two thousand, six hundred sixty-nine".