72751150909 has 2 divisors, whose sum is σ = 72751150910. Its totient is φ = 72751150908.

The previous prime is 72751150861. The next prime is 72751150921. The reversal of 72751150909 is 90905115727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67727460025 + 5023690884 = 260245^2 + 70878^2 .

It is a cyclic number.

It is not a de Polignac number, because 72751150909 - 2⁷ = 72751150781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72751150949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36375575454 + 36375575455.

It is an arithmetic number, because the mean of its divisors is an integer number (36375575455).

Almost surely, 2^72751150909 is an apocalyptic number.

It is an amenable number.

72751150909 is a deficient number, since it is larger than the sum of its proper divisors (1).

72751150909 is an equidigital number, since it uses as much as digits as its factorization.

72751150909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 198450, while the sum is 46.

The spelling of 72751150909 in words is "seventy-two billion, seven hundred fifty-one million, one hundred fifty thousand, nine hundred nine".