71981625303 has 24 divisors (see below), whose sum is σ = 122659936256. Its totient is φ = 39805506000.

The previous prime is 71981625281. The next prime is 71981625361. The reversal of 71981625303 is 30352618917.

71981625303 is a `hidden beast` number, since 7 + 19 + 8 + 1 + 625 + 3 + 0 + 3 = 666.

It is not a de Polignac number, because 71981625303 - 2⁸ = 71981625047 is a prime.

It is a super-2 number, since 2×71981625303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71981625503) 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 23 ways as a sum of consecutive naturals, for example, 18426523 + ... + 18430428.

Almost surely, 2^71981625303 is an apocalyptic number.

71981625303 is a deficient number, since it is larger than the sum of its proper divisors (50678310953).

71981625303 is a wasteful number, since it uses less digits than its factorization.

71981625303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36856995 (or 36856992 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 71981625303 in words is "seventy-one billion, nine hundred eighty-one million, six hundred twenty-five thousand, three hundred three".