71385788461 has 16 divisors (see below), whose sum is σ = 78644160000. Its totient is φ = 64384564608.

The previous prime is 71385788387. The next prime is 71385788483. The reversal of 71385788461 is 16488758317.

It is not a de Polignac number, because 71385788461 - 2⁷ = 71385788333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71385788396 and 71385788405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71385788161) 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, 268465 + ... + 463513.

It is an arithmetic number, because the mean of its divisors is an integer number (4915260000).

Almost surely, 2^71385788461 is an apocalyptic number.

It is an amenable number.

71385788461 is a deficient number, since it is larger than the sum of its proper divisors (7258371539).

71385788461 is a wasteful number, since it uses less digits than its factorization.

71385788461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195708.

The product of its digits is 9031680, while the sum is 58.

The spelling of 71385788461 in words is "seventy-one billion, three hundred eighty-five million, seven hundred eighty-eight thousand, four hundred sixty-one".