72861032570548 has 12 divisors (see below), whose sum is σ = 127608894122500. Its totient is φ = 36401348535552.

The previous prime is 72861032570533. The next prime is 72861032570587. The reversal of 72861032570548 is 84507523016827.

It can be written as a sum of positive squares in 2 ways, for example, as 18486749342884 + 54374283227664 = 4299622^2 + 7373892^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72861032570492 and 72861032570501.

It is a congruent number.

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, 7291931811 + ... + 7291941802.

Almost surely, 2^{72861032570548} is an apocalyptic number.

It is an amenable number.

72861032570548 is a deficient number, since it is larger than the sum of its proper divisors (54747861551952).

72861032570548 is a wasteful number, since it uses less digits than its factorization.

72861032570548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14583874866 (or 14583874864 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 58.

The spelling of 72861032570548 in words is "seventy-two trillion, eight hundred sixty-one billion, thirty-two million, five hundred seventy thousand, five hundred forty-eight".