81419271262 has 16 divisors (see below), whose sum is σ = 144388856160. Its totient is φ = 33690732768.

The previous prime is 81419271253. The next prime is 81419271293. The reversal of 81419271262 is 26217291418.

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, 100269633 + ... + 100270444.

It is an arithmetic number, because the mean of its divisors is an integer number (9024303510).

Almost surely, 2^81419271262 is an apocalyptic number.

81419271262 is a deficient number, since it is larger than the sum of its proper divisors (62969584898).

81419271262 is a wasteful number, since it uses less digits than its factorization.

81419271262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200540115.

The product of its digits is 96768, while the sum is 43.

The spelling of 81419271262 in words is "eighty-one billion, four hundred nineteen million, two hundred seventy-one thousand, two hundred sixty-two".