71770879112005 has 16 divisors (see below), whose sum is σ = 87093202484160. Its totient is φ = 56771278261632.

The previous prime is 71770879112003. The next prime is 71770879112011. The reversal of 71770879112005 is 50021197807717.

It is a cyclic number.

It is not a de Polignac number, because 71770879112005 - 2¹ = 71770879112003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71770879112003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135401302 + ... + 135930328.

It is an arithmetic number, because the mean of its divisors is an integer number (5443325155260).

Almost surely, 2^{71770879112005} is an apocalyptic number.

It is an amenable number.

71770879112005 is a deficient number, since it is larger than the sum of its proper divisors (15322323372155).

71770879112005 is a wasteful number, since it uses less digits than its factorization.

71770879112005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833988.

The product of its (nonzero) digits is 1728720, while the sum is 55.

The spelling of 71770879112005 in words is "seventy-one trillion, seven hundred seventy billion, eight hundred seventy-nine million, one hundred twelve thousand, five".