72245156801 has 2 divisors, whose sum is σ = 72245156802. Its totient is φ = 72245156800.

The previous prime is 72245156777. The next prime is 72245156833. The reversal of 72245156801 is 10865154227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55412689201 + 16832467600 = 235399^2 + 129740^2 .

It is a cyclic number.

It is not a de Polignac number, because 72245156801 - 2¹⁰ = 72245155777 is a prime.

It is not a weakly prime, because it can be changed into another prime (72245056801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122578400 + 36122578401.

It is an arithmetic number, because the mean of its divisors is an integer number (36122578401).

Almost surely, 2^72245156801 is an apocalyptic number.

It is an amenable number.

72245156801 is a deficient number, since it is larger than the sum of its proper divisors (1).

72245156801 is an equidigital number, since it uses as much as digits as its factorization.

72245156801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 72245156801 in words is "seventy-two billion, two hundred forty-five million, one hundred fifty-six thousand, eight hundred one".