71385056851 has 4 divisors (see below), whose sum is σ = 71479357552. Its totient is φ = 71290756152.

The previous prime is 71385056849. The next prime is 71385056903. The reversal of 71385056851 is 15865058317.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71385056851 - 2¹ = 71385056849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71385056795 and 71385056804.

It is not an unprimeable number, because it can be changed into a prime (71385056801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47149215 + ... + 47150728.

It is an arithmetic number, because the mean of its divisors is an integer number (17869839388).

Almost surely, 2^71385056851 is an apocalyptic number.

71385056851 is a deficient number, since it is larger than the sum of its proper divisors (94300701).

71385056851 is an equidigital number, since it uses as much as digits as its factorization.

71385056851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94300700.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 71385056851 in words is "seventy-one billion, three hundred eighty-five million, fifty-six thousand, eight hundred fifty-one".