71681665106270 has 16 divisors (see below), whose sum is σ = 129040693040448. Its totient is φ = 28669622520480.

The previous prime is 71681665106221. The next prime is 71681665106323. The reversal of 71681665106270 is 7260156618617.

It is a happy number.

It is a super-2 number, since 2×71681665106270² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380341334 + ... + 380529753.

It is an arithmetic number, because the mean of its divisors is an integer number (8065043315028).

Almost surely, 2^{71681665106270} is an apocalyptic number.

71681665106270 is a deficient number, since it is larger than the sum of its proper divisors (57359027934178).

71681665106270 is a wasteful number, since it uses less digits than its factorization.

71681665106270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760880515.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 71681665106270 in words is "seventy-one trillion, six hundred eighty-one billion, six hundred sixty-five million, one hundred six thousand, two hundred seventy".