71690238669 has 32 divisors (see below), whose sum is σ = 113457623040. Its totient is φ = 39414641472.

The previous prime is 71690238667. The next prime is 71690238691. The reversal of 71690238669 is 96683209617.

It is a happy number.

It is not a de Polignac number, because 71690238669 - 2¹ = 71690238667 is a prime.

It is a super-2 number, since 2×71690238669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71690238661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557314 + ... + 673779.

It is an arithmetic number, because the mean of its divisors is an integer number (3545550720).

Almost surely, 2^71690238669 is an apocalyptic number.

It is an amenable number.

71690238669 is a deficient number, since it is larger than the sum of its proper divisors (41767384371).

71690238669 is a wasteful number, since it uses less digits than its factorization.

71690238669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231209.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 71690238669 in words is "seventy-one billion, six hundred ninety million, two hundred thirty-eight thousand, six hundred sixty-nine".