72005753650 has 24 divisors (see below), whose sum is σ = 137550454020. Its totient is φ = 28023860160.

The previous prime is 72005753641. The next prime is 72005753653. The reversal of 72005753650 is 5635750027.

It can be written as a sum of positive squares in 6 ways, for example, as 52098519001 + 19907234649 = 228251^2 + 141093^2 .

It is not an unprimeable number, because it can be changed into a prime (72005753653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19459165 + ... + 19462864.

Almost surely, 2^72005753650 is an apocalyptic number.

72005753650 is a deficient number, since it is larger than the sum of its proper divisors (65544700370).

72005753650 is a wasteful number, since it uses less digits than its factorization.

72005753650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38922078 (or 38922073 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 40.

The spelling of 72005753650 in words is "seventy-two billion, five million, seven hundred fifty-three thousand, six hundred fifty".