71235746421 has 16 divisors (see below), whose sum is σ = 112292803200. Its totient is φ = 39302480448.

The previous prime is 71235746419. The next prime is 71235746423. The reversal of 71235746421 is 12464753217.

It is an interprime number because it is at equal distance from previous prime (71235746419) and next prime (71235746423).

It is not a de Polignac number, because 71235746421 - 2¹ = 71235746419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71235746423) 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, 58485226 + ... + 58486443.

It is an arithmetic number, because the mean of its divisors is an integer number (7018300200).

Almost surely, 2^71235746421 is an apocalyptic number.

It is an amenable number.

71235746421 is a deficient number, since it is larger than the sum of its proper divisors (41057056779).

71235746421 is a wasteful number, since it uses less digits than its factorization.

71235746421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116971708.

The product of its digits is 282240, while the sum is 42.

The spelling of 71235746421 in words is "seventy-one billion, two hundred thirty-five million, seven hundred forty-six thousand, four hundred twenty-one".