71681665106151 has 14 divisors (see below), whose sum is σ = 107473333280960. Its totient is φ = 47787776736948.

The previous prime is 71681665106131. The next prime is 71681665106159. The reversal of 71681665106151 is 15160156618617.

71681665106151 is a `hidden beast` number, since 7 + 1 + 6 + 8 + 1 + 6 + 6 + 5 + 10 + 615 + 1 = 666.

It is not a de Polignac number, because 71681665106151 - 2¹⁴ = 71681665089767 is a prime.

It is a super-2 number, since 2×71681665106151² (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 (71681665106159) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 49164378631 + ... + 49164380088.

Almost surely, 2^{71681665106151} is an apocalyptic number.

71681665106151 is a deficient number, since it is larger than the sum of its proper divisors (35791668174809).

71681665106151 is an frugal number, since it uses more digits than its factorization.

71681665106151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98328758737 (or 98328758722 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The spelling of 71681665106151 in words is "seventy-one trillion, six hundred eighty-one billion, six hundred sixty-five million, one hundred six thousand, one hundred fifty-one".