72063447892 has 6 divisors (see below), whose sum is σ = 126111033818. Its totient is φ = 36031723944.

The previous prime is 72063447853. The next prime is 72063447913. The reversal of 72063447892 is 29874436027.

It can be written as a sum of positive squares in only one way, i.e., 56928051216 + 15135396676 = 238596^2 + 123026^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9007930983 + ... + 9007930990.

Almost surely, 2^72063447892 is an apocalyptic number.

It is an amenable number.

72063447892 is a deficient number, since it is larger than the sum of its proper divisors (54047585926).

72063447892 is a wasteful number, since it uses less digits than its factorization.

72063447892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18015861977 (or 18015861975 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 72063447892 in words is "seventy-two billion, sixty-three million, four hundred forty-seven thousand, eight hundred ninety-two".