71071544901021 has 32 divisors (see below), whose sum is σ = 108742575464448. Its totient is φ = 40446276756480.

The previous prime is 71071544900971. The next prime is 71071544901043. The reversal of 71071544901021 is 12010944517017.

It is not a de Polignac number, because 71071544901021 - 2¹⁸ = 71071544638877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71071544901061) 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, 11749885 + ... + 16739261.

It is an arithmetic number, because the mean of its divisors is an integer number (3398205483264).

Almost surely, 2^{71071544901021} is an apocalyptic number.

It is an amenable number.

71071544901021 is a deficient number, since it is larger than the sum of its proper divisors (37671030563427).

71071544901021 is a wasteful number, since it uses less digits than its factorization.

71071544901021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992161.

The product of its (nonzero) digits is 70560, while the sum is 42.

The spelling of 71071544901021 in words is "seventy-one trillion, seventy-one billion, five hundred forty-four million, nine hundred one thousand, twenty-one".