72293510258 has 18 divisors (see below), whose sum is σ = 112069452717. Its totient is φ = 34975027080.

The previous prime is 72293510251. The next prime is 72293510273. The reversal of 72293510258 is 85201539227.

It can be written as a sum of positive squares in 2 ways, for example, as 48813157969 + 23480352289 = 220937^2 + 153233^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=190123.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72293510251) by changing a digit.

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 in 8 ways as a sum of consecutive naturals, for example, 11784560 + ... + 11790692.

Almost surely, 2^72293510258 is an apocalyptic number.

72293510258 is a deficient number, since it is larger than the sum of its proper divisors (39775942459).

72293510258 is an frugal number, since it uses more digits than its factorization.

72293510258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12330 (or 6166 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 72293510258 in words is "seventy-two billion, two hundred ninety-three million, five hundred ten thousand, two hundred fifty-eight".