71421346051 has 16 divisors (see below), whose sum is σ = 80729809920. Its totient is φ = 62623681120.

The previous prime is 71421346049. The next prime is 71421346069. The reversal of 71421346051 is 15064312417.

It is not a de Polignac number, because 71421346051 - 2¹ = 71421346049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71421345998 and 71421346016.

It is not an unprimeable number, because it can be changed into a prime (71421346151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1003795 + ... + 1072588.

It is an arithmetic number, because the mean of its divisors is an integer number (5045613120).

Almost surely, 2^71421346051 is an apocalyptic number.

71421346051 is a deficient number, since it is larger than the sum of its proper divisors (9308463869).

71421346051 is a wasteful number, since it uses less digits than its factorization.

71421346051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076506.

The product of its (nonzero) digits is 20160, while the sum is 34.

Adding to 71421346051 its reverse (15064312417), we get a palindrome (86485658468).

The spelling of 71421346051 in words is "seventy-one billion, four hundred twenty-one million, three hundred forty-six thousand, fifty-one".