71890211541 has 32 divisors (see below), whose sum is σ = 102788300160. Its totient is φ = 44532260864.

The previous prime is 71890211537. The next prime is 71890211563. The reversal of 71890211541 is 14511209817.

It is a cyclic number.

It is not a de Polignac number, because 71890211541 - 2² = 71890211537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71890211541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71890211501) 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, 6822565 + ... + 6833093.

It is an arithmetic number, because the mean of its divisors is an integer number (3212134380).

Almost surely, 2^71890211541 is an apocalyptic number.

It is an amenable number.

71890211541 is a deficient number, since it is larger than the sum of its proper divisors (30898088619).

71890211541 is a wasteful number, since it uses less digits than its factorization.

71890211541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12245.

The product of its (nonzero) digits is 20160, while the sum is 39.

The spelling of 71890211541 in words is "seventy-one billion, eight hundred ninety million, two hundred eleven thousand, five hundred forty-one".