71053203406 has 4 divisors (see below), whose sum is σ = 106579805112. Its totient is φ = 35526601702.

The previous prime is 71053203373. The next prime is 71053203421. The reversal of 71053203406 is 60430235017.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17763300850 + ... + 17763300853.

It is an arithmetic number, because the mean of its divisors is an integer number (26644951278).

Almost surely, 2^71053203406 is an apocalyptic number.

71053203406 is a deficient number, since it is larger than the sum of its proper divisors (35526601706).

71053203406 is a wasteful number, since it uses less digits than its factorization.

71053203406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35526601705.

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 71053203406 in words is "seventy-one billion, fifty-three million, two hundred three thousand, four hundred six".