73771063172 has 12 divisors (see below), whose sum is σ = 129103208220. Its totient is φ = 36884432256.

The previous prime is 73771063141. The next prime is 73771063181. The reversal of 73771063172 is 27136017737.

It can be written as a sum of positive squares in 2 ways, for example, as 18331535236 + 55439527936 = 135394^2 + 235456^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113297 + ... + 400472.

It is an arithmetic number, because the mean of its divisors is an integer number (10758600685).

Almost surely, 2^73771063172 is an apocalyptic number.

It is an amenable number.

73771063172 is a deficient number, since it is larger than the sum of its proper divisors (55332145048).

73771063172 is a wasteful number, since it uses less digits than its factorization.

73771063172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549670 (or 549668 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 44.

The spelling of 73771063172 in words is "seventy-three billion, seven hundred seventy-one million, sixty-three thousand, one hundred seventy-two".