71081620810 has 64 divisors (see below), whose sum is σ = 133911429120. Its totient is φ = 27133957440.

The previous prime is 71081620801. The next prime is 71081620811. The reversal of 71081620810 is 1802618017.

It is a super-2 number, since 2×71081620810² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71081620811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15924639 + ... + 15929101.

It is an arithmetic number, because the mean of its divisors is an integer number (2092366080).

Almost surely, 2^71081620810 is an apocalyptic number.

71081620810 is a deficient number, since it is larger than the sum of its proper divisors (62829808310).

71081620810 is a wasteful number, since it uses less digits than its factorization.

71081620810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5203.

The product of its (nonzero) digits is 5376, while the sum is 34.

The spelling of 71081620810 in words is "seventy-one billion, eighty-one million, six hundred twenty thousand, eight hundred ten".