71206651503 has 80 divisors (see below), whose sum is σ = 121419144000. Its totient is φ = 41198367744.

The previous prime is 71206651459. The next prime is 71206651553. The reversal of 71206651503 is 30515660217.

71206651503 is a `hidden beast` number, since 71 + 20 + 6 + 65 + 1 + 503 = 666.

It is not a de Polignac number, because 71206651503 - 2⁸ = 71206651247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71206651553) by changing a digit.

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 in 79 ways as a sum of consecutive naturals, for example, 25901373 + ... + 25904121.

It is an arithmetic number, because the mean of its divisors is an integer number (1517739300).

Almost surely, 2^71206651503 is an apocalyptic number.

71206651503 is a deficient number, since it is larger than the sum of its proper divisors (50212492497).

71206651503 is a wasteful number, since it uses less digits than its factorization.

71206651503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238 (or 4229 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 71206651503 in words is "seventy-one billion, two hundred six million, six hundred fifty-one thousand, five hundred three".